diff --git a/README.md b/README.md
index bd4b78a..3e03329 100644
--- a/README.md
+++ b/README.md
@@ -45,9 +45,10 @@ $ sudo apt install git
 
 # 设置时区为上海
 $ sudo timedatectl set-timezone Asia/Shanghai
+$ sudo hwclock --systohc
+$ sudo hwclock --hctosys
 $ date 
 Thu Dec 14 15:13:45 CST 2023
-
 # 更新py库
 $ pip3 install --upgrade pip
 ```