Add study notes for 2025-08-21

Author: AutoBot42

Zyuhui008.md

@@ -15,6 +15,10 @@ timezone: UTC+8
 ## Notes
 
 <!-- Content_START -->
+# 2025-08-21
+
+web3乡村建设实例
+
 # 2025-08-20
 
 DAO＝社区➕智能合约➕去中心化资产/协作