diff --git a/app/Http/Controllers/IndexController.php b/app/Http/Controllers/IndexController.php
index 0f36af1..a5f3bab 100644
--- a/app/Http/Controllers/IndexController.php
+++ b/app/Http/Controllers/IndexController.php
@@ -46,7 +46,7 @@ class IndexController extends Controller
             ->get();
 
         $nyydt = Article::shown()
-            ->whereNotIn('id', $nyydtimg->pluck('id'))
+            ->whereNotNull('cover')
             ->byCategory(7)
             ->bysort()
             ->take(4)
diff --git a/app/Http/Controllers/StaffController.php b/app/Http/Controllers/StaffController.php
index 6b8cc8d..f9dfa46 100644
--- a/app/Http/Controllers/StaffController.php
+++ b/app/Http/Controllers/StaffController.php
@@ -8,7 +8,7 @@ use App\Models\Staff;
 
 class StaffController extends Controller
 {
-    public $category_id = 16;
+    public $category_id = 4;
 
 
     public function index()