diff --git a/08_langgraph_basics/01_state_node_edge.py b/08_langgraph_basics/01_state_node_edge.py
index 73b6202..aafdda3 100644
--- a/08_langgraph_basics/01_state_node_edge.py
+++ b/08_langgraph_basics/01_state_node_edge.py
@@ -1,4 +1,4 @@
-from typing import TypedDict
+from typing import TypedDict # 定义数据类型
 from langgraph.graph import StateGraph,END,START