update

app/Models/CourseSign.php

@@ -577,7 +577,7 @@ class CourseSign extends SoftDeletesModel
                 $sourseSignList2 = (clone $courseSignList)->whereHas('user', function ($query) use ($area) {
                     $query->whereHas('company', function ($query) use ($area) {
                         $query->where('company_city', '苏州市')
-                            ->where('company_area', $area);
+                            ->where('company_area', 'like', '%' . $area . '%');
                     });
                 })->get();
             }