diff --git a/apps/github-app/src/app.ts b/apps/github-app/src/app.ts
index 1e79b0c8..d268b32d 100644
--- a/apps/github-app/src/app.ts
+++ b/apps/github-app/src/app.ts
@@ -54,11 +54,11 @@ export function app(app: Probot) {
           panelId,
           content: `[b]${
             ctx.payload.issue.user.login
-          }[/b] create Issue:\n\nTitle: ${ctx.payload.issue.title}\nContent: ${
+          }[/b] create Issue:\n\nTitle: ${ctx.payload.issue.title}\n[markdown]${
             ctx.payload.issue.body ?? ''
-          }\n\nWebsite: ${ctx.payload.issue.html_url}`,
+          }[/markdown]\n\nWebsite: ${ctx.payload.issue.html_url}`,
           meta: {
-            githubRepoOwner: ctx.payload.repository.owner,
+            githubRepoOwner: ctx.payload.repository.owner.login,
             githubRepoName: ctx.payload.repository.name,
             githubIssueNumber: ctx.payload.issue.number,
           },
@@ -130,9 +130,9 @@ export function app(app: Probot) {
         topicId,
         content: `[b]${
           ctx.payload.comment.user.login
-        }[/b] reply Issue:\n\nContent: ${
+        }[/b] reply Issue:\n\n[markdown]${
           ctx.payload.comment.body ?? ''
-        }\n\nWebsite: ${ctx.payload.comment.html_url}`,
+        }[/markdown]\n\nWebsite: ${ctx.payload.comment.html_url}`,
       });
     } catch (err) {
       console.error(err);
diff --git a/client/web/plugins/com.msgbyte.bbcode/src/tags/__all__.ts b/client/web/plugins/com.msgbyte.bbcode/src/tags/__all__.ts
index 9e51fc98..eb71f9f9 100644
--- a/client/web/plugins/com.msgbyte.bbcode/src/tags/__all__.ts
+++ b/client/web/plugins/com.msgbyte.bbcode/src/tags/__all__.ts
@@ -27,3 +27,4 @@ registerBBCodeTag('code', CodeTag);
 registerBBCodeTag('at', MentionTag);
 registerBBCodeTag('emoji', EmojiTag);
 registerBBCodeTag('markdown', MarkdownTag);
+registerBBCodeTag('md', MarkdownTag); // alias
diff --git a/client/web/src/components/Markdown.tsx b/client/web/src/components/Markdown.tsx
index d0a6b8f6..2d06506b 100644
--- a/client/web/src/components/Markdown.tsx
+++ b/client/web/src/components/Markdown.tsx
@@ -28,6 +28,7 @@ export const Markdown: React.FC<{
       className="tailchat-markdown"
       transformImageUri={(src) => transformUrl(src)}
       transformLinkUri={(href) => transformUrl(href)}
+      skipHtml={true}
     >
       {raw}
     </ReactMarkdown>
diff --git a/client/web/tailchat.d.ts b/client/web/tailchat.d.ts
index 1ab8bc10..f2770cfd 100644
--- a/client/web/tailchat.d.ts
+++ b/client/web/tailchat.d.ts
@@ -183,13 +183,21 @@ declare module '@capital/common' {
 
   export const regGroupPanel: any;
 
-  export const messageInterpreter: any;
-
-  export const regMessageInterpreter: any;
+  export const messageInterpreter: {
+    name?: string;
+    explainMessage: (message: string) => React.ReactNode;
+  }[];
+
+  export const regMessageInterpreter: (interpreter: {
+    name?: string;
+    explainMessage: (message: string) => React.ReactNode;
+  }) => void;
 
-  export const getMessageRender: any;
+  export const getMessageRender: (message: string) => React.ReactNode;
 
-  export const regMessageRender: any;
+  export const regMessageRender: (
+    render: (message: string) => React.ReactNode
+  ) => void;
 
   export const getMessageTextDecorators: any;