diff --git a/components/nav/Secondary.vue b/components/nav/Secondary.vue
index c471d67..9c47b47 100644
--- a/components/nav/Secondary.vue
+++ b/components/nav/Secondary.vue
@@ -2,6 +2,7 @@
 export interface NavSecondaryItem {
   label: string
   to: string
+  external?: boolean
 }
 </script>
 
@@ -68,6 +69,8 @@ const isCurrentPath = (path: string) => {
           'text-neutral-400 dark:text-neutral-500': !isCurrentPath(nav.to),
         }"
         :to="nav.to"
+        :external="nav.external"
+        :target="nav.external ? '_blank' : undefined"
       >
         {{ nav.label }}
       </NuxtLink>
diff --git a/pages/course/prep/config.ts b/pages/course/prep/config.ts
index dc9e17d..789be6c 100644
--- a/pages/course/prep/config.ts
+++ b/pages/course/prep/config.ts
@@ -13,8 +13,9 @@ export const nav: NavSecondaryItem[] = [
     label: 'AI 出题',
     to: '/course/prep/quiz',
   },
-  // {
-  //   label: '微视频制作',
-  //   to: '/course/prep/test',
-  // },
+  {
+    label: '微视频制作',
+    to: 'https://dh.fenshenzhike.com/',
+    external: true,
+  },
 ]