diff --git a/app.py b/app.py
index 73547c11..6dc494cc 100755
--- a/app.py
+++ b/app.py
@@ -11056,13 +11056,14 @@ def get_events_by_mainline():
 
             # 构建概念名称 -> lv2 映射
             # 结构: L1 -> L2 -> L3 -> concepts (concepts 只在 L3 层)
+            # JSON 字段名: lv1, lv1_id, lv2, lv2_id (不是 name/id)
             for lv1 in hierarchy_list:
-                lv1_name = lv1.get('name', '')
-                lv1_id = lv1.get('id', '')
+                lv1_name = lv1.get('lv1', '')
+                lv1_id = lv1.get('lv1_id', '')
 
                 for lv2 in lv1.get('children', []) or []:
-                    lv2_name = lv2.get('name', '')
-                    lv2_id = lv2.get('id', '')
+                    lv2_name = lv2.get('lv2', '')
+                    lv2_id = lv2.get('lv2_id', '')
 
                     # L3 层包含 concepts
                     for lv3 in lv2.get('children', []) or []: