diff --git a/review_report.txt b/review_report.txt
new file mode 100644
index 0000000..0024ea9
--- /dev/null
+++ b/review_report.txt
@@ -0,0 +1,12 @@
+═══════════════════════════════════════════════════════════════
+🔍 AsEnumerable/AsQueryable/ToList 完整 REVIEW
+═══════════════════════════════════════════════════════════════
+
+檢查範圍：Batch 1-3 所有已修改文件
+檢查標準：
+  ✅ 最佳選擇 - 性能和可讀性都最優
+  ⚠️  可優化 - 可以進一步優化
+  ❌ 需修正 - 存在明顯問題
+
+═══════════════════════════════════════════════════════════════
+
diff --git a/web/App_Code/api/FollowerController.cs b/web/App_Code/api/FollowerController.cs
index 872eeff..0d841fb 100644
--- a/web/App_Code/api/FollowerController.cs
+++ b/web/App_Code/api/FollowerController.cs
@@ -340,10 +340,9 @@ public class FollowerController : ApiController
           
             //int ccc = cc.Count();
 
-           
-
-            var ccList = cc.ToList();
-            var qry = _db.followers.Where(f => ccList.Contains(f.num) || (f.leader.HasValue && ccList.Contains(f.leader.Value)));
+            // 優化：使用子查詢在數據庫層面執行，避免載入所有家族成員 ID
+            // 生成 SQL: WHERE num IN (SELECT...) OR leader IN (SELECT...)
+            var qry = _db.followers.Where(f => cc.Contains(f.num) || (f.leader.HasValue && cc.Contains(f.leader.Value)));