diff --git a/app/Http/Admin/Controllers/UploadController.php b/app/Http/Admin/Controllers/UploadController.php
index e6ddd867..6cc30b93 100644
--- a/app/Http/Admin/Controllers/UploadController.php
+++ b/app/Http/Admin/Controllers/UploadController.php
@@ -15,14 +15,17 @@ class UploadController extends Controller
      */
     public function uploadCoverImageAction()
     {
-        $storageService = new StorageService();
+        $service = new StorageService();
 
-        $key = $storageService->uploadCoverImage();
+        $file = $service->uploadCoverImage();
 
-        $url = $storageService->getCiImageUrl($key);
-
-        if ($url) {
-            return $this->jsonSuccess(['data' => ['src' => $url, 'title' => '']]);
+        if ($file) {
+            return $this->jsonSuccess([
+                'data' => [
+                    'src' => $service->getCiImageUrl($file->path),
+                    'title' => $file->name,
+                ]
+            ]);
         } else {
             return $this->jsonError(['msg' => '上传文件失败']);
         }
@@ -33,30 +36,38 @@ class UploadController extends Controller
      */
     public function uploadAvatarImageAction()
     {
-        $storageService = new StorageService();
+        $service = new StorageService();
 
-        $key = $storageService->uploadAvatarImage();
+        $file = $service->uploadAvatarImage();
 
-        $url = $storageService->getCiImageUrl($key);
-
-        if ($url) {
-            return $this->jsonSuccess(['data' => ['src' => $url, 'title' => '']]);
+        if ($file) {
+            return $this->jsonSuccess([
+                'data' => [
+                    'src' => $service->getCiImageUrl($file->path),
+                    'title' => $file->name,
+                ]
+            ]);
         } else {
             return $this->jsonError(['msg' => '上传文件失败']);
         }
     }
 
     /**
-     * @Post("/img/content", name="admin.upload.content_img")
+     * @Post("/img/editor", name="admin.upload.editor_img")
      */
-    public function uploadContentImageAction()
+    public function uploadEditorImageAction()
     {
-        $storageService = new StorageService();
+        $service = new StorageService();
 
-        $url = $storageService->uploadContentImage();
+        $file = $service->uploadEditorImage();
 
-        if ($url) {
-            return $this->jsonSuccess(['data' => ['src' => $url, 'title' => '']]);
+        if ($file) {
+            return $this->jsonSuccess([
+                'data' => [
+                    'src' => $service->getCiImageUrl($file->path),
+                    'title' => $file->name,
+                ]
+            ]);
         } else {
             return $this->jsonError(['msg' => '上传文件失败']);
         }
diff --git a/app/Http/Admin/Services/ChapterContent.php b/app/Http/Admin/Services/ChapterContent.php
index 548f337e..63b332cf 100644
--- a/app/Http/Admin/Services/ChapterContent.php
+++ b/app/Http/Admin/Services/ChapterContent.php
@@ -112,22 +112,23 @@ class ChapterContent extends Service
 
         $validator = new ChapterLiveValidator();
 
-        $data = [];
+        $startTime = $validator->checkStartTime($post['start_time']);
+        $endTime = $validator->checkEndTime($post['end_time']);
 
-        $data['start_time'] = $validator->checkStartTime($post['start_time']);
-        $data['end_time'] = $validator->checkEndTime($post['end_time']);
+        $validator->checkTimeRange($startTime, $endTime);
 
-        $validator->checkTimeRange($post['start_time'], $post['end_time']);
-
-        $live->update($data);
+        $live->update([
+            'start_time' => $startTime,
+            'end_time' => $endTime,
+        ]);
 
         /**
          * @var array $attrs
          */
         $attrs = $chapter->attrs;
 
-        $attrs['start_time'] = $data['start_time'];
-        $attrs['end_time'] = $data['end_time'];
+        $attrs['start_time'] = $startTime;
+        $attrs['end_time'] = $endTime;
 
         $chapter->update(['attrs' => $attrs]);
 
@@ -146,19 +147,17 @@ class ChapterContent extends Service
 
         $validator = new ChapterReadValidator();
 
-        $data = [];
+        $content = $validator->checkContent($post['content']);
 
-        $data['content'] = $validator->checkContent($post['content']);
-
-        $read->update($data);
+        $read->update(['content' => $content]);
 
         /**
          * @var array $attrs
          */
         $attrs = $chapter->attrs;
 
-        $attrs['word_count'] = WordUtil::getWordCount($read->content);
-        $attrs['duration'] = WordUtil::getWordDuration($read->content);
+        $attrs['word_count'] = WordUtil::getWordCount($content);
+        $attrs['duration'] = WordUtil::getWordDuration($content);
 
         $chapter->update(['attrs' => $attrs]);
 
diff --git a/app/Http/Admin/Views/chapter/edit_lesson_read.volt b/app/Http/Admin/Views/chapter/edit_lesson_read.volt
index 74cf5122..ab75b36a 100644
--- a/app/Http/Admin/Views/chapter/edit_lesson_read.volt
+++ b/app/Http/Admin/Views/chapter/edit_lesson_read.volt
@@ -1,7 +1,9 @@
+<div id="editor"></div>
+
 <form class="layui-form kg-form" method="POST" action="{{ url({'for':'admin.chapter.content','id':chapter.id}) }}">
 
     <div class="layui-form-item">
-        <textarea name="content" class="layui-hide" id="kg-layedit">{{ read.content }}</textarea>
+        <textarea class="layui-hide" name="content">{{ read.content }}</textarea>
     </div>
 
     <div class="layui-form-item">
@@ -9,9 +11,60 @@
         <div class="layui-input-block">
             <button class="kg-submit layui-btn" lay-submit="true" lay-filter="go">提交</button>
             <button type="button" class="kg-back layui-btn layui-btn-primary">返回</button>
+            <input type="hidden" name="chapter_id" value="{{ chapter.id }}">
         </div>
     </div>
 
 </form>
 
-{{ partial('partials/layedit') }}
\ No newline at end of file
+<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/vditor/dist/index.css"/>
+
+<script src="https://cdn.jsdelivr.net/npm/vditor/dist/index.min.js" defer></script>
+
+<script>
+    layui.use(['jquery'], function () {
+
+        var $ = layui.jquery;
+        var $content = $('textarea[name=content]');
+        var vditor = new Vditor('editor', {
+            minHeight: 420,
+            outline: true,
+            tab: "    ",
+            resize: {
+                enable: true
+            },
+            cache: {
+                enable: false
+            },
+            preview: {
+                markdown: {
+                    chinesePunct: true
+                }
+            },
+            counter: {
+                enable: true,
+                max: 60000
+            },
+            upload: {
+                url: '/admin/upload/img/editor',
+                max: 10 * 1024 * 1024,
+                accept: 'image/*',
+                headers: {
+                    'X-Csrf-Token': $('meta[name="csrf-token"]').attr('content'),
+                    'X-Requested-With': 'XMLHttpRequest'
+                },
+                success: function (editor, responseText) {
+                    console.log(editor, responseText);
+                    var json = JSON.parse(responseText);
+                    var img = '![](' + json.data.src + ')';
+                    vditor.insertValue(img);
+                }
+            },
+            value: $content.val()
+        });
+
+        $('.kg-submit').on('click', function () {
+            $content.val(vditor.getValue());
+        });
+    });
+</script>
\ No newline at end of file
diff --git a/app/Http/Admin/Views/chapter/edit_lesson_read2.volt b/app/Http/Admin/Views/chapter/edit_lesson_read2.volt
new file mode 100644
index 00000000..74cf5122
--- /dev/null
+++ b/app/Http/Admin/Views/chapter/edit_lesson_read2.volt
@@ -0,0 +1,17 @@
+<form class="layui-form kg-form" method="POST" action="{{ url({'for':'admin.chapter.content','id':chapter.id}) }}">
+
+    <div class="layui-form-item">
+        <textarea name="content" class="layui-hide" id="kg-layedit">{{ read.content }}</textarea>
+    </div>
+
+    <div class="layui-form-item">
+        <label class="layui-form-label"></label>
+        <div class="layui-input-block">
+            <button class="kg-submit layui-btn" lay-submit="true" lay-filter="go">提交</button>
+            <button type="button" class="kg-back layui-btn layui-btn-primary">返回</button>
+        </div>
+    </div>
+
+</form>
+
+{{ partial('partials/layedit') }}
\ No newline at end of file
diff --git a/app/Http/Web/Controllers/PublicController.php b/app/Http/Web/Controllers/PublicController.php
index ff7d3c76..2bb434dd 100644
--- a/app/Http/Web/Controllers/PublicController.php
+++ b/app/Http/Web/Controllers/PublicController.php
@@ -3,13 +3,14 @@
 namespace App\Http\Web\Controllers;
 
 use App\Library\CsrfToken as CsrfTokenService;
-use App\Models\ContentImage as ContentImageModel;
+use App\Repos\UploadFile as UploadFileRepo;
 use App\Services\Pay\Alipay as AlipayService;
 use App\Services\Pay\Wxpay as WxpayService;
 use App\Services\Storage as StorageService;
 use App\Traits\Response as ResponseTrait;
 use App\Traits\Security as SecurityTrait;
-use PHPQRCode\QRcode as PHPQRCode;
+use Phalcon\Text;
+use PHPQRCode\QRcode;
 
 class PublicController extends \Phalcon\Mvc\Controller
 {
@@ -18,24 +19,28 @@ class PublicController extends \Phalcon\Mvc\Controller
     use SecurityTrait;
 
     /**
-     * @Get("/content/img/{id:[0-9]+}", name="web.content_img")
+     * @Get("/img/{id:[0-9]+}", name="web.img")
      */
-    public function contentImageAction($id)
+    public function imageAction($id)
     {
-        $image = ContentImageModel::findFirst($id);
+        $repo = new UploadFileRepo();
 
-        if (!$image) {
+        $file = $repo->findById($id);
+
+        if ($file && Text::startsWith($file->mime, 'image')) {
+
+            $service = new StorageService();
+
+            $location = $service->getCiImageUrl($file->path);
+
+            $this->response->redirect($location);
+
+        } else {
 
             $this->response->setStatusCode(404);
 
             return $this->response;
         }
-
-        $storageService = new StorageService();
-
-        $location = $storageService->getCiImageUrl($image->path);
-
-        $this->response->redirect($location);
     }
 
     /**
@@ -49,7 +54,7 @@ class PublicController extends \Phalcon\Mvc\Controller
 
         $url = urldecode($text);
 
-        PHPQRcode::png($url, false, $level, $size);
+        QRcode::png($url, false, $level, $size);
 
         $this->response->send();
 
diff --git a/app/Http/Web/Views/course/consults.volt b/app/Http/Web/Views/course/consults.volt
index 3f7d67ae..de72c630 100644
--- a/app/Http/Web/Views/course/consults.volt
+++ b/app/Http/Web/Views/course/consults.volt
@@ -1,7 +1,7 @@
 {% if pager.total_pages > 0 %}
     <div class="review-list">
         {% for item in pager.items %}
-            {% set item.answer = item.answer ? item.answer : '稍安勿燥，请耐心等待回复吧' %}
+            {% set item.answer = item.answer ? item.answer : '请耐心等待回复吧' %}
             {% set owner_url = url({'for':'web.user.show','id':item.owner.id}) %}
             {% set consult_url = url({'for':'web.consult.show','id':item.id}) %}
             {% set like_url = url({'for':'web.consult.like','id':item.id}) %}
diff --git a/app/Http/Web/Views/my/consults.volt b/app/Http/Web/Views/my/consults.volt
index b58d6a12..5869bc9b 100644
--- a/app/Http/Web/Views/my/consults.volt
+++ b/app/Http/Web/Views/my/consults.volt
@@ -27,7 +27,7 @@
                         </thead>
                         <tbody>
                         {% for item in pager.items %}
-                            {% set answer = item.answer ? item.answer : '<span class="gray">稍安勿燥，请耐心等待回复吧</span>' %}
+                            {% set answer = item.answer ? item.answer : '请耐心等待回复吧' %}
                             {% set show_url = url({'for':'web.consult.show','id':item.id}) %}
                             {% set edit_url = url({'for':'web.consult.edit','id':item.id}) %}
                             {% set delete_url = url({'for':'web.consult.delete','id':item.id}) %}
diff --git a/app/Library/Helper.php b/app/Library/Helper.php
index 6bd91302..e2fbb853 100644
--- a/app/Library/Helper.php
+++ b/app/Library/Helper.php
@@ -275,7 +275,7 @@ function kg_time_ago($time)
     if ($diff > 365 * 86400) {
         return date('Y-m-d', $time);
     } elseif ($diff > 30 * 86400) {
-        return floor($diff / 30 / 86400) . '月前';
+        return floor($diff / 30 / 86400) . '个月前';
     } elseif ($diff > 7 * 86400) {
         return floor($diff / 7 / 86400) . '周前';
     } elseif ($diff > 86400) {
diff --git a/app/Library/Utils/FileInfo.php b/app/Library/Utils/FileInfo.php
index 8dbb4102..ac179386 100644
--- a/app/Library/Utils/FileInfo.php
+++ b/app/Library/Utils/FileInfo.php
@@ -5,53 +5,53 @@ namespace App\Library\Utils;
 class FileInfo
 {
 
-    public static function isVideo($mine)
+    public static function isVideo($mime)
     {
-        $case1 = self::isSecure($mine);
+        $case1 = self::isSecure($mime);
 
-        $case2 = strpos($mine, 'video') !== false;
+        $case2 = strpos($mime, 'video') !== false;
 
         return $case1 && $case2;
     }
 
-    public static function isAudio($mine)
+    public static function isAudio($mime)
     {
-        $case1 = self::isSecure($mine);
+        $case1 = self::isSecure($mime);
 
-        $case2 = strpos($mine, 'audio') !== false;
+        $case2 = strpos($mime, 'audio') !== false;
 
         return $case1 && $case2;
     }
 
-    public static function isImage($mine)
+    public static function isImage($mime)
     {
-        $case1 = self::isSecure($mine);
+        $case1 = self::isSecure($mime);
 
-        $case2 = strpos($mine, 'image') !== false;
+        $case2 = strpos($mime, 'image') !== false;
 
         return $case1 && $case2;
     }
 
-    public static function isSecure($mine)
+    public static function isSecure($mime)
     {
-        return in_array($mine, self::getMineTypes());
+        return in_array($mime, self::getMimeTypes());
     }
 
-    public static function getMineType($file)
+    public static function getMimeType($file)
     {
         $info = new \finfo(FILEINFO_MIME_TYPE);
 
         return $info->file($file);
     }
 
-    public static function getMineTypeByExt($ext)
+    public static function getMimeTypeByExt($ext)
     {
-        $mineTypes = self::getMineTypes();
+        $mimeTypes = self::getMimeTypes();
 
-        return $mineTypes[$ext] ?? null;
+        return $mimeTypes[$ext] ?? null;
     }
 
-    public static function getMineTypes()
+    public static function getMimeTypes()
     {
         return [
             'aac' => 'audio/aac',
diff --git a/app/Models/ChapterRead.php b/app/Models/ChapterRead.php
index 5d4e13c9..1545eaf0 100644
--- a/app/Models/ChapterRead.php
+++ b/app/Models/ChapterRead.php
@@ -5,12 +5,6 @@ namespace App\Models;
 class ChapterRead extends Model
 {
 
-    /**
-     * 格式类型
-     */
-    const FORMAT_HTML = 'html';
-    const FORMAT_MARKDOWN = 'markdown';
-
     /**
      * 主键编号
      *
@@ -39,13 +33,6 @@ class ChapterRead extends Model
      */
     public $content;
 
-    /**
-     * 格式
-     *
-     * @var string
-     */
-    public $format;
-
     /**
      * 创建时间
      *
@@ -82,12 +69,4 @@ class ChapterRead extends Model
         $this->update_time = time();
     }
 
-    public static function formatTypes()
-    {
-        return [
-            self::FORMAT_HTML => 'html',
-            self::FORMAT_MARKDOWN => 'markdown',
-        ];
-    }
-
 }
diff --git a/app/Models/ContentImage.php b/app/Models/ContentImage.php
index f15c73a2..f04fcf9f 100644
--- a/app/Models/ContentImage.php
+++ b/app/Models/ContentImage.php
@@ -66,7 +66,7 @@ class ContentImage extends Model
 
     public function beforeUpdate()
     {
-        $this->update_at = time();
+        $this->update_time = time();
     }
 
 }
diff --git a/app/Models/UploadFile.php b/app/Models/UploadFile.php
new file mode 100644
index 00000000..2188d4e0
--- /dev/null
+++ b/app/Models/UploadFile.php
@@ -0,0 +1,100 @@
+<?php
+
+namespace App\Models;
+
+use Phalcon\Mvc\Model\Behavior\SoftDelete;
+
+class UploadFile extends Model
+{
+
+    /**
+     * 主键编号
+     *
+     * @var int
+     */
+    public $id;
+
+    /**
+     * 名称
+     *
+     * @var string
+     */
+    public $name;
+
+    /**
+     * 路径
+     *
+     * @var string
+     */
+    public $path;
+
+    /**
+     * mime
+     *
+     * @var string
+     */
+    public $mime;
+
+    /**
+     * md5
+     *
+     * @var string
+     */
+    public $md5;
+
+    /**
+     * 大小
+     *
+     * @var int
+     */
+    public $size;
+
+    /**
+     * 删除标识
+     *
+     * @var int
+     */
+    public $deleted;
+
+    /**
+     * 创建时间
+     *
+     * @var int
+     */
+    public $create_time;
+
+    /**
+     * 更新时间
+     *
+     * @var int
+     */
+    public $update_time;
+
+    public function getSource(): string
+    {
+        return 'kg_upload_file';
+    }
+
+    public function initialize()
+    {
+        parent::initialize();
+
+        $this->addBehavior(
+            new SoftDelete([
+                'field' => 'deleted',
+                'value' => 1,
+            ])
+        );
+    }
+
+    public function beforeCreate()
+    {
+        $this->create_time = time();
+    }
+
+    public function beforeUpdate()
+    {
+        $this->update_time = time();
+    }
+
+}
diff --git a/app/Repos/UploadFile.php b/app/Repos/UploadFile.php
new file mode 100644
index 00000000..ef55c73c
--- /dev/null
+++ b/app/Repos/UploadFile.php
@@ -0,0 +1,32 @@
+<?php
+
+namespace App\Repos;
+
+use App\Models\UploadFile as UploadFileModel;
+use Phalcon\Mvc\Model;
+
+class UploadFile extends Repository
+{
+
+    /**
+     * @param int $id
+     * @return UploadFileModel|Model|bool
+     */
+    public function findById($id)
+    {
+        return UploadFileModel::findFirst($id);
+    }
+
+    /**
+     * @param string $md5
+     * @return UploadFileModel|Model|bool
+     */
+    public function findByMd5($md5)
+    {
+        return UploadFileModel::findFirst([
+            'conditions' => 'md5 = :md5:',
+            'bind' => ['md5' => $md5],
+        ]);
+    }
+
+}
diff --git a/app/Services/CourseStats.php b/app/Services/CourseStats.php
index d5f0a438..e41492a8 100644
--- a/app/Services/CourseStats.php
+++ b/app/Services/CourseStats.php
@@ -48,7 +48,9 @@ class CourseStats extends Service
 
     public function updateScore($courseId)
     {
-
+        /**
+         * @todo 计算综合评分
+         */
     }
 
     public function updateReadAttrs($courseId)
diff --git a/app/Services/Frontend/Consult/ConsultReply.php b/app/Services/Frontend/Consult/ConsultReply.php
index 7a90e0c5..be9f6a4e 100644
--- a/app/Services/Frontend/Consult/ConsultReply.php
+++ b/app/Services/Frontend/Consult/ConsultReply.php
@@ -21,7 +21,7 @@ class ConsultReply extends FrontendService
 
         $validator = new ConsultValidator();
 
-        $validator->checkTeacher($consult, $user);
+        $validator->checkReplyPriv($consult, $user);
 
         $answer = $validator->checkAnswer($post['answer']);
 
diff --git a/app/Services/Frontend/Consult/ConsultUpdate.php b/app/Services/Frontend/Consult/ConsultUpdate.php
index 7463af22..af77767c 100644
--- a/app/Services/Frontend/Consult/ConsultUpdate.php
+++ b/app/Services/Frontend/Consult/ConsultUpdate.php
@@ -21,9 +21,7 @@ class ConsultUpdate extends FrontendService
 
         $validator = new ConsultValidator();
 
-        $validator->checkOwner($user->id, $consult->owner_id);
-
-        $validator->checkConsultEdit($consult);
+        $validator->checkEditPriv($consult, $user);
 
         $data = [];
 
diff --git a/app/Services/Storage.php b/app/Services/Storage.php
index 2d53624a..eb24f6c6 100644
--- a/app/Services/Storage.php
+++ b/app/Services/Storage.php
@@ -3,13 +3,22 @@
 namespace App\Services;
 
 use App\Library\Utils\FileInfo;
-use App\Models\ContentImage as ContentImageModel;
+use App\Models\UploadFile as UploadFileModel;
+use App\Repos\UploadFile as UploadFileRepo;
 use Phalcon\Logger\Adapter\File as FileLogger;
 use Qcloud\Cos\Client as CosClient;
 
 class Storage extends Service
 {
 
+    /**
+     * 文件类型
+     */
+    const TYPE_IMAGE = 'image';
+    const TYPE_VIDEO = 'video';
+    const TYPE_AUDIO = 'audio';
+    const TYPE_FILE = 'file';
+
     /**
      * @var array
      */
@@ -50,74 +59,99 @@ class Storage extends Service
     /**
      * 上传封面图片
      *
-     * @return mixed
+     * @return UploadFileModel|bool
      */
     public function uploadCoverImage()
     {
-        return $this->uploadImage('/img/cover/');
+        return $this->upload('/img/cover/', self::TYPE_IMAGE);
     }
 
     /**
-     * 上传内容图片
+     * 上传编辑器图片
      *
-     * @return string|bool
+     * @return UploadFileModel|bool
      */
-    public function uploadContentImage()
+    public function uploadEditorImage()
     {
-        $path = $this->uploadImage('/img/content/');
-
-        if (!$path) return false;
-
-        $contentImage = new ContentImageModel();
-
-        $contentImage->path = $path;
-
-        $contentImage->create();
-
-        return $this->url->get([
-            'for' => 'web.content_img',
-            'id' => $contentImage->id,
-        ]);
+        return $this->upload('/img/editor/', self::TYPE_IMAGE);
     }
 
     /**
      * 上传头像图片
      *
-     * @return string|bool
+     * @return UploadFileModel|bool
      */
     public function uploadAvatarImage()
     {
-        return $this->uploadImage('/img/avatar/');
+        return $this->upload('/img/avatar/', self::TYPE_IMAGE);
     }
 
     /**
-     * 上传图片
+     * 上传im图片
+     *
+     * @return UploadFileModel|bool
+     */
+    public function uploadImImage()
+    {
+        return $this->upload('/im/img/', self::TYPE_IMAGE);
+    }
+
+    /**
+     * 上传im文件
+     */
+    public function uploadImFile()
+    {
+        return $this->upload('/im/file/', self::TYPE_FILE);
+    }
+
+    /**
+     * 上传文件
      *
      * @param string $prefix
-     * @return string|bool
+     * @param string $type
+     * @return UploadFileModel|bool
      */
-    public function uploadImage($prefix = '')
+    protected function upload($prefix = '', $type = self::TYPE_IMAGE)
     {
-        $paths = [];
+        $list = [];
 
         if ($this->request->hasFiles(true)) {
 
             $files = $this->request->getUploadedFiles(true);
 
+            $uploadFileRepo = new UploadFileRepo();
+
             foreach ($files as $file) {
-                if (!FileInfo::isImage($file->getRealType())) {
+
+                if ($this->checkUploadFile($file->getRealType(), $type) == false) {
                     continue;
                 }
-                $extension = $this->getFileExtension($file->getName());
-                $keyName = $this->generateFileName($extension, $prefix);
-                $path = $this->putFile($keyName, $file->getTempName());
-                if ($path) {
-                    $paths[] = $path;
+
+                $md5 = md5_file($file->getTempName());
+
+                $uploadFile = $uploadFileRepo->findByMd5($md5);
+
+                if ($uploadFile == false) {
+
+                    $extension = $this->getFileExtension($file->getName());
+                    $keyName = $this->generateFileName($extension, $prefix);
+                    $path = $this->putFile($keyName, $file->getTempName());
+
+                    $uploadFile = new UploadFileModel();
+
+                    $uploadFile->mime = $file->getRealType();
+                    $uploadFile->size = $file->getSize();
+                    $uploadFile->path = $path;
+                    $uploadFile->md5 = $md5;
+
+                    $uploadFile->create();
                 }
+
+                $list[] = $uploadFile;
             }
         }
 
-        return $paths[0] ?: false;
+        return $list[0] ?: false;
     }
 
     /**
@@ -127,7 +161,7 @@ class Storage extends Service
      * @param string $body
      * @return string|bool
      */
-    public function putString($key, $body)
+    protected function putString($key, $body)
     {
         $bucket = $this->settings['bucket_name'];
 
@@ -158,7 +192,7 @@ class Storage extends Service
      * @param string $fileName
      * @return mixed string|bool
      */
-    public function putFile($key, $fileName)
+    protected function putFile($key, $fileName)
     {
         $bucket = $this->settings['bucket_name'];
 
@@ -190,7 +224,7 @@ class Storage extends Service
      * @param string $key
      * @return string|bool
      */
-    public function deleteFile($key)
+    protected function deleteObject($key)
     {
         $bucket = $this->settings['bucket_name'];
 
@@ -292,12 +326,39 @@ class Storage extends Service
         return strtolower($extension);
     }
 
+    /**
+     * 检查上传文件
+     *
+     * @param string $mime
+     * @param string $type
+     * @return bool
+     */
+    protected function checkUploadFile($mime, $type)
+    {
+        switch ($type) {
+            case self::TYPE_IMAGE:
+                $result = FileInfo::isImage($mime);
+                break;
+            case self::TYPE_VIDEO:
+                $result = FileInfo::isVideo($mime);
+                break;
+            case self::TYPE_AUDIO:
+                $result = FileInfo::isAudio($mime);
+                break;
+            default:
+                $result = FileInfo::isSecure($mime);
+                break;
+        }
+
+        return $result;
+    }
+
     /**
      * 获取CosClient
      *
      * @return CosClient
      */
-    public function getCosClient()
+    protected function getCosClient()
     {
         $secret = $this->getSectionSettings('secret');
 
diff --git a/app/Services/Throttle.php b/app/Services/Throttle.php
index 68521a9c..1ba76b37 100644
--- a/app/Services/Throttle.php
+++ b/app/Services/Throttle.php
@@ -43,8 +43,8 @@ class Throttle extends Service
     {
         $authUser = $this->getAuthUser();
 
-        if (!empty($authUser->id)) {
-            return md5($authUser->id);
+        if (!empty($authUser['id'])) {
+            return md5($authUser['id']);
         }
 
         $httpHost = $this->request->getHttpHost();
diff --git a/app/Validators/Chapter.php b/app/Validators/Chapter.php
index eb9e99d1..800c9268 100644
--- a/app/Validators/Chapter.php
+++ b/app/Validators/Chapter.php
@@ -8,7 +8,6 @@ use App\Exceptions\BadRequest as BadRequestException;
 use App\Models\Chapter as ChapterModel;
 use App\Models\Course as CourseModel;
 use App\Repos\Chapter as ChapterRepo;
-use App\Repos\Course as CourseRepo;
 
 class Chapter extends Validator
 {
@@ -138,21 +137,17 @@ class Chapter extends Validator
 
     public function checkPublishAbility(ChapterModel $chapter)
     {
-        $courseRepo = new CourseRepo();
-
-        $course = $courseRepo->findById($chapter->course_id);
-
         $attrs = $chapter->attrs;
 
-        if ($course->model == CourseModel::MODEL_VOD) {
+        if ($chapter->model == CourseModel::MODEL_VOD) {
             if ($attrs['duration'] == 0) {
                 throw new BadRequestException('chapter.vod_not_ready');
             }
-        } elseif ($course->model == CourseModel::MODEL_LIVE) {
+        } elseif ($chapter->model == CourseModel::MODEL_LIVE) {
             if ($attrs['start_time'] == 0) {
                 throw new BadRequestException('chapter.live_time_empty');
             }
-        } elseif ($course->model == CourseModel::MODEL_READ) {
+        } elseif ($chapter->model == CourseModel::MODEL_READ) {
             if ($attrs['word_count'] == 0) {
                 throw new BadRequestException('chapter.read_not_ready');
             }
diff --git a/app/Validators/ChapterRead.php b/app/Validators/ChapterRead.php
index d3a7b478..0e155cf9 100644
--- a/app/Validators/ChapterRead.php
+++ b/app/Validators/ChapterRead.php
@@ -9,7 +9,7 @@ class ChapterRead extends Validator
 
     public function checkContent($content)
     {
-        $value = $this->filter->sanitize($content, ['trim']);
+        $value = $this->filter->sanitize($content, ['trim', 'striptags']);
 
         $length = kg_strlen($value);
 
@@ -17,7 +17,7 @@ class ChapterRead extends Validator
             throw new BadRequestException('chapter_read.content_too_short');
         }
 
-        if ($length > 65535) {
+        if ($length > 60000) {
             throw new BadRequestException('chapter_read.content_too_long');
         }
 
diff --git a/app/Validators/Consult.php b/app/Validators/Consult.php
index a24226db..2bdb67a6 100644
--- a/app/Validators/Consult.php
+++ b/app/Validators/Consult.php
@@ -92,7 +92,7 @@ class Consult extends Validator
         return $status;
     }
 
-    public function checkTeacher(ConsultModel $consult, UserModel $user)
+    public function checkReplyPriv(ConsultModel $consult, UserModel $user)
     {
         $repo = new CourseRepo();
 
@@ -110,8 +110,10 @@ class Consult extends Validator
         }
     }
 
-    public function checkConsultEdit(ConsultModel $consult)
+    public function checkEditPriv(ConsultModel $consult, UserModel $user)
     {
+        $this->checkOwner($user->id, $consult->owner_id);
+
         /**
          * (1)已回复不允许修改提问
          * (2)发表三天以后不能修改提问
diff --git a/app/Validators/Course.php b/app/Validators/Course.php
index dd4057ef..7bd25588 100644
--- a/app/Validators/Course.php
+++ b/app/Validators/Course.php
@@ -108,11 +108,11 @@ class Course extends Validator
 
     public function checkDetails($details)
     {
-        $value = $this->filter->sanitize($details, ['trim']);
+        $value = $this->filter->sanitize($details, ['trim', 'striptags']);
 
         $length = kg_strlen($value);
 
-        if ($length > 3000) {
+        if ($length > 5000) {
             throw new BadRequestException('course.details_too_long');
         }
 
diff --git a/app/Validators/Help.php b/app/Validators/Help.php
index ddeab14b..ec09468c 100644
--- a/app/Validators/Help.php
+++ b/app/Validators/Help.php
@@ -74,7 +74,7 @@ class Help extends Validator
 
     public function checkContent($content)
     {
-        $value = $this->filter->sanitize($content, ['trim']);
+        $value = $this->filter->sanitize($content, ['trim', 'striptags']);
 
         $length = kg_strlen($value);
 
diff --git a/app/Validators/Page.php b/app/Validators/Page.php
index 8d54a12f..abc88d01 100644
--- a/app/Validators/Page.php
+++ b/app/Validators/Page.php
@@ -74,7 +74,7 @@ class Page extends Validator
 
     public function checkContent($content)
     {
-        $value = $this->filter->sanitize($content, ['trim']);
+        $value = $this->filter->sanitize($content, ['trim', 'striptags']);
 
         $length = kg_strlen($value);
 
diff --git a/composer.json b/composer.json
index 7378a4fa..8037183f 100644
--- a/composer.json
+++ b/composer.json
@@ -1,7 +1,7 @@
 {
   "require": {
     "ext-phalcon": "~3.4",
-    "ext-redis": "~4.3",
+    "ext-redis": "~5.0",
     "ext-pdo": "*",
     "ext-json": "*",
     "ext-fileinfo": "*",
@@ -19,7 +19,8 @@
     "whichbrowser/parser": "^2.0",
     "hightman/xunsearch": "^1.4.14",
     "aferrandini/phpqrcode": "1.0.1",
-    "xiaochong0302/ip2region": "^1.0"
+    "xiaochong0302/ip2region": "^1.0",
+    "joyqi/hyper-down": "dev-master"
   },
   "require-dev": {
     "odan/phinx-migrations-generator": "^4.6",
diff --git a/composer.lock b/composer.lock
index c812be5e..d2cc5c9d 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
     "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
     "This file is @generated automatically"
   ],
-  "content-hash": "d847018715ab8103c3b5e04db1807223",
+  "content-hash": "d95c023895ee3acc72bcd13024da3eb3",
   "packages": [
     {
       "name": "aferrandini/phpqrcode",
@@ -77,16 +77,16 @@
           }
         ]
       },
-            "require": {
-                "php": "^7.2"
-            },
-            "require-dev": {
-                "doctrine/coding-standard": "^6.0",
-                "phpstan/phpstan": "^0.11.8",
-                "phpunit/phpunit": "^8.2"
-            },
-            "type": "library",
-            "extra": {
+      "require": {
+        "php": "^7.2"
+      },
+      "require-dev": {
+        "doctrine/coding-standard": "^6.0",
+        "phpstan/phpstan": "^0.11.8",
+        "phpunit/phpunit": "^8.2"
+      },
+      "type": "library",
+      "extra": {
                 "branch-alias": {
                     "dev-master": "1.1.x-dev"
                 }
@@ -574,35 +574,77 @@
                 }
             ],
             "description": "xunsearch php sdk, include yii, yii2 supports",
-            "homepage": "http://www.xunsearch.com/",
-            "keywords": [
-                "search engine",
-                "xunsearch",
-                "yii",
-                "yii2"
-            ],
-            "time": "2019-11-01T02:17:32+00:00"
+          "homepage": "http://www.xunsearch.com/",
+          "keywords": [
+            "search engine",
+            "xunsearch",
+            "yii",
+            "yii2"
+          ],
+          "time": "2019-11-01T02:17:32+00:00"
         },
+    {
+      "name": "joyqi/hyper-down",
+      "version": "dev-master",
+      "source": {
+        "type": "git",
+        "url": "https://github.com/SegmentFault/HyperDown.git",
+        "reference": "e9bf808ff8cc1736b15a669e46f1d81f77ce026b"
+      },
+      "dist": {
+        "type": "zip",
+        "url": "https://api.github.com/repos/SegmentFault/HyperDown/zipball/e9bf808ff8cc1736b15a669e46f1d81f77ce026b",
+        "reference": "e9bf808ff8cc1736b15a669e46f1d81f77ce026b",
+        "shasum": "",
+        "mirrors": [
+          {
+            "url": "https://mirrors.aliyun.com/composer/dists/%package%/%reference%.%type%",
+            "preferred": true
+          }
+        ]
+      },
+      "require": {
+        "php": ">=5.4.0"
+      },
+      "type": "library",
+      "autoload": {
+        "psr-4": {
+          "HyperDown\\": "./"
+        }
+      },
+      "notification-url": "https://packagist.org/downloads/",
+      "license": [
+        "BSD"
+      ],
+      "authors": [
         {
-            "name": "monolog/monolog",
-            "version": "2.0.0",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/Seldaek/monolog.git",
-                "reference": "68545165e19249013afd1d6f7485aecff07a2d22"
-            },
-            "dist": {
-              "type": "zip",
-              "url": "https://api.github.com/repos/Seldaek/monolog/zipball/68545165e19249013afd1d6f7485aecff07a2d22",
-              "reference": "68545165e19249013afd1d6f7485aecff07a2d22",
-              "shasum": "",
-              "mirrors": [
-                {
-                  "url": "https://mirrors.aliyun.com/composer/dists/%package%/%reference%.%type%",
-                  "preferred": true
-                }
-              ]
-            },
+          "name": "joyqi",
+          "email": "joyqi@segmentfault.com"
+        }
+      ],
+      "description": "A light weight markdown parser library",
+      "time": "2019-11-18T09:50:06+00:00"
+    },
+    {
+      "name": "monolog/monolog",
+      "version": "2.0.0",
+      "source": {
+        "type": "git",
+        "url": "https://github.com/Seldaek/monolog.git",
+        "reference": "68545165e19249013afd1d6f7485aecff07a2d22"
+      },
+      "dist": {
+        "type": "zip",
+        "url": "https://api.github.com/repos/Seldaek/monolog/zipball/68545165e19249013afd1d6f7485aecff07a2d22",
+        "reference": "68545165e19249013afd1d6f7485aecff07a2d22",
+        "shasum": "",
+        "mirrors": [
+          {
+            "url": "https://mirrors.aliyun.com/composer/dists/%package%/%reference%.%type%",
+            "preferred": true
+          }
+        ]
+      },
             "require": {
                 "php": "^7.2",
                 "psr/log": "^1.0.1"
@@ -693,16 +735,16 @@
             "require": {
                 "php": ">=5.3.2"
             },
-            "require-dev": {
-                "phpunit/phpunit": "~4.0|~5.0"
-            },
-            "type": "library",
-            "autoload": {
-                "psr-4": {
-                    "Cron\\": "src/Cron/"
-                }
-            },
-            "notification-url": "https://packagist.org/downloads/",
+          "require-dev": {
+            "phpunit/phpunit": "~4.0|~5.0"
+          },
+          "type": "library",
+          "autoload": {
+            "psr-4": {
+              "Cron\\": "src/Cron/"
+            }
+          },
+          "notification-url": "https://packagist.org/downloads/",
           "license": [
             "MIT"
           ],
@@ -1890,16 +1932,16 @@
             "require": {
                 "workerman/workerman": ">=3.1.8"
             },
-            "type": "library",
-            "autoload": {
-                "psr-4": {
-                    "GatewayWorker\\": "./src"
-                }
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-              "MIT"
-            ],
+          "type": "library",
+          "autoload": {
+            "psr-4": {
+              "GatewayWorker\\": "./src"
+            }
+          },
+          "notification-url": "https://packagist.org/downloads/",
+          "license": [
+            "MIT"
+          ],
           "homepage": "http://www.workerman.net",
           "keywords": [
             "communication",
@@ -1960,30 +2002,30 @@
           }
         ]
       },
-            "require": {
-                "php": ">=5.3"
-            },
-            "suggest": {
-                "ext-event": "For better performance. "
-            },
-            "type": "library",
-            "autoload": {
-                "psr-4": {
-                    "Workerman\\": "./"
+      "require": {
+        "php": ">=5.3"
+      },
+      "suggest": {
+        "ext-event": "For better performance. "
+      },
+      "type": "library",
+      "autoload": {
+        "psr-4": {
+          "Workerman\\": "./"
                 }
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
-                "MIT"
-            ],
-            "authors": [
-                {
-                    "name": "walkor",
-                    "email": "walkor@workerman.net",
-                    "homepage": "http://www.workerman.net",
-                    "role": "Developer"
-                }
+              "MIT"
             ],
+      "authors": [
+        {
+          "name": "walkor",
+          "email": "walkor@workerman.net",
+          "homepage": "http://www.workerman.net",
+          "role": "Developer"
+        }
+      ],
       "description": "An asynchronous event driven PHP framework for easily building fast, scalable network applications.",
       "homepage": "http://www.workerman.net",
       "keywords": [
@@ -2022,16 +2064,16 @@
         }
       },
       "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "MIT"
-            ],
-            "authors": [
-                {
-                    "name": "xiaochong0302",
-                    "email": "xiaochong0302@gmail.com"
-                }
-            ],
-            "description": "ip2region扩展包",
+      "license": [
+        "MIT"
+      ],
+      "authors": [
+        {
+          "name": "xiaochong0302",
+          "email": "xiaochong0302@gmail.com"
+        }
+      ],
+      "description": "ip2region扩展包",
             "keywords": [
                 "Ip2Region"
             ],
@@ -2077,16 +2119,16 @@
                     "Yansongda\\Pay\\": "src"
                 }
             },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "MIT"
-            ],
-            "authors": [
-                {
-                    "name": "yansongda",
-                    "email": "me@yansongda.cn"
-                }
-            ],
+          "notification-url": "https://packagist.org/downloads/",
+          "license": [
+            "MIT"
+          ],
+          "authors": [
+            {
+              "name": "yansongda",
+              "email": "me@yansongda.cn"
+            }
+          ],
           "description": "专注 Alipay 和 WeChat 的支付扩展包",
           "keywords": [
             "alipay",
@@ -2125,16 +2167,16 @@
         "phpunit/phpunit": "^7.5",
         "predis/predis": "^1.1"
       },
-            "suggest": {
-                "predis/predis": "Allows to use throttle feature"
-            },
-            "type": "library",
-            "autoload": {
-                "psr-4": {
-                    "Yansongda\\Supports\\": "src/"
-                }
-            },
-            "notification-url": "https://packagist.org/downloads/",
+      "suggest": {
+        "predis/predis": "Allows to use throttle feature"
+      },
+      "type": "library",
+      "autoload": {
+        "psr-4": {
+          "Yansongda\\Supports\\": "src/"
+        }
+      },
+      "notification-url": "https://packagist.org/downloads/",
             "license": [
                 "MIT"
             ],
@@ -2390,16 +2432,16 @@
           "psr-4": {
             "Cake\\Cache\\": "."
           }
-            },
-            "notification-url": "https://packagist.jp/downloads/",
-            "license": [
-                "MIT"
-            ],
-            "authors": [
-                {
-                    "name": "CakePHP Community",
-                    "homepage": "https://github.com/cakephp/cache/graphs/contributors"
-                }
+        },
+        "notification-url": "https://packagist.jp/downloads/",
+        "license": [
+          "MIT"
+        ],
+        "authors": [
+          {
+            "name": "CakePHP Community",
+            "homepage": "https://github.com/cakephp/cache/graphs/contributors"
+          }
             ],
             "description": "Easy to use Caching library with support for multiple caching backends",
             "homepage": "https://cakephp.org",
@@ -2718,16 +2760,16 @@
             },
             "notification-url": "https://packagist.jp/downloads/",
             "license": [
-                "MIT"
+              "MIT"
             ],
-            "authors": [
-                {
-                    "name": "CakePHP Community",
-                    "homepage": "https://github.com/cakephp/utility/graphs/contributors"
-                }
-            ],
-            "description": "CakePHP Utility classes such as Inflector, String, Hash, and Security",
-            "homepage": "https://cakephp.org",
+          "authors": [
+            {
+              "name": "CakePHP Community",
+              "homepage": "https://github.com/cakephp/utility/graphs/contributors"
+            }
+          ],
+          "description": "CakePHP Utility classes such as Inflector, String, Hash, and Security",
+          "homepage": "https://cakephp.org",
           "keywords": [
             "cakephp",
             "hash",
@@ -3005,23 +3047,23 @@
           "overtrue/phplint": "^1.1",
           "phpstan/phpstan-shim": "^0.11",
           "phpunit/phpunit": "^7.0",
-                "squizlabs/php_codesniffer": "^3.4"
-            },
-            "bin": [
-                "./bin/phinx-migrations"
-            ],
-            "type": "library",
-            "autoload": {
-                "psr-4": {
-                    "Odan\\Migration\\": "src/Migration/"
-                }
-            },
-            "notification-url": "https://packagist.jp/downloads/",
-            "license": [
-                "MIT"
-            ],
-            "description": "Migration generator for Phinx",
-            "homepage": "https://github.com/odan/phinx-migrations-generator",
+          "squizlabs/php_codesniffer": "^3.4"
+        },
+        "bin": [
+          "./bin/phinx-migrations"
+        ],
+        "type": "library",
+        "autoload": {
+          "psr-4": {
+            "Odan\\Migration\\": "src/Migration/"
+          }
+        },
+        "notification-url": "https://packagist.jp/downloads/",
+        "license": [
+          "MIT"
+        ],
+        "description": "Migration generator for Phinx",
+        "homepage": "https://github.com/odan/phinx-migrations-generator",
         "keywords": [
           "database",
           "generator",
@@ -3106,16 +3148,16 @@
             }
           ]
         },
-            "require": {
-                "php": ">=5.3.0"
-            },
-            "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "1.0.x-dev"
-                }
-            },
-            "autoload": {
+        "require": {
+          "php": ">=5.3.0"
+        },
+        "type": "library",
+        "extra": {
+          "branch-alias": {
+            "dev-master": "1.0.x-dev"
+          }
+        },
+        "autoload": {
                 "psr-4": {
                     "Psr\\Container\\": "src/"
                 }
@@ -3715,16 +3757,16 @@
             ],
             "authors": [
                 {
-                    "name": "Nicolas Grekas",
-                    "email": "p@tchwork.com"
+                  "name": "Nicolas Grekas",
+                  "email": "p@tchwork.com"
                 },
-                {
-                    "name": "Symfony Community",
-                    "homepage": "https://symfony.com/contributors"
-                }
+              {
+                "name": "Symfony Community",
+                "homepage": "https://symfony.com/contributors"
+              }
             ],
-            "description": "Generic abstractions related to writing services",
-            "homepage": "https://symfony.com",
+          "description": "Generic abstractions related to writing services",
+          "homepage": "https://symfony.com",
           "keywords": [
             "abstractions",
             "contracts",
@@ -3837,16 +3879,16 @@
             }
           ]
         },
-            "require": {
-                "php": "^7.2.5",
-                "symfony/polyfill-ctype": "~1.8"
-            },
-            "conflict": {
-                "symfony/console": "<4.4"
-            },
-            "require-dev": {
-                "symfony/console": "^4.4|^5.0"
-            },
+        "require": {
+          "php": "^7.2.5",
+          "symfony/polyfill-ctype": "~1.8"
+        },
+        "conflict": {
+          "symfony/console": "<4.4"
+        },
+        "require-dev": {
+          "symfony/console": "^4.4|^5.0"
+        },
             "suggest": {
                 "symfony/console": "For validating YAML files using the lint command"
             },
@@ -3858,16 +3900,16 @@
             },
             "autoload": {
                 "psr-4": {
-                    "Symfony\\Component\\Yaml\\": ""
+                  "Symfony\\Component\\Yaml\\": ""
                 },
-                "exclude-from-classmap": [
-                    "/Tests/"
-                ]
+              "exclude-from-classmap": [
+                "/Tests/"
+              ]
             },
-            "notification-url": "https://packagist.jp/downloads/",
-            "license": [
-                "MIT"
-            ],
+        "notification-url": "https://packagist.jp/downloads/",
+        "license": [
+          "MIT"
+        ],
         "authors": [
           {
             "name": "Fabien Potencier",
@@ -3941,14 +3983,17 @@
     ],
   "aliases": [],
   "minimum-stability": "stable",
-  "stability-flags": [],
+  "stability-flags": {
+    "joyqi/hyper-down": 20
+  },
   "prefer-stable": false,
   "prefer-lowest": false,
   "platform": {
     "ext-phalcon": "~3.4",
-    "ext-redis": "~4.3",
+    "ext-redis": "~5.0",
     "ext-pdo": "*",
-    "ext-json": "*"
+    "ext-json": "*",
+    "ext-fileinfo": "*"
   },
   "platform-dev": [],
   "plugin-api-version": "1.1.0"
diff --git a/config/errors.php b/config/errors.php
index 6eac314e..94dcd7e1 100644
--- a/config/errors.php
+++ b/config/errors.php
@@ -103,7 +103,7 @@ $error['course.title_too_short'] = '标题太短（少于5个字符）';
 $error['course.title_too_long'] = '标题太长（多于50个字符）';
 $error['course.summary_too_long'] = '标题太长（多于255个字符）';
 $error['course.keywords_too_long'] = '关键字太长（多于100个字符）';
-$error['course.details_too_long'] = '详情太长（多于3000个字符）';
+$error['course.details_too_long'] = '详情太长（多于5000个字符）';
 $error['course.invalid_model'] = '无效的模型类别';
 $error['course.invalid_level'] = '无效的难度级别';
 $error['course.invalid_cover'] = '无效的封面';
@@ -184,7 +184,7 @@ $error['chapter_live.time_too_long'] = '直播时间太长（超过3小时）';
  */
 $error['chapter_read.not_found'] = '文章不存在';
 $error['chapter_read.content_too_short'] = '文章内容太短（少于10个字符）';
-$error['chapter_read.content_too_long'] = '文章内容太长（多于65535个字符）';
+$error['chapter_read.content_too_long'] = '文章内容太长（多于60000个字符）';
 
 /**
  * 评价相关
@@ -229,7 +229,7 @@ $error['help.not_found'] = '帮助不存在';
 $error['help.title_too_short'] = '标题太短（少于2个字符）';
 $error['help.title_too_long'] = '标题太长（多于50个字符）';
 $error['help.content_too_short'] = '内容太短（少于10个字符）';
-$error['help.content_too_long'] = '内容太长（多于3000个字符）';
+$error['help.content_too_long'] = '内容太长（多于60000个字符）';
 $error['help.invalid_priority'] = '无效的排序数值（范围：1-255）';
 $error['help.invalid_publish_status'] = '无效的发布状态';