diff --git a/content/posts/bj_homework.md b/content/posts/bj_homework.md
index b7b5f3e..8b30a5c 100644
--- a/content/posts/bj_homework.md
+++ b/content/posts/bj_homework.md
@@ -1265,7 +1265,7 @@ int main(int argc, char *argv[]) {
 ```
 
 得到的运行结果为：
-![结果](https://gcore.jsdelivr.net/gh/game-loader/picbase@master/uPic/1112fw710c.png) 
+![结果](https://fastly.jsdelivr.net/gh/game-loader/picbase@master/uPic/1112fw710c.png) 
 
 ### 组合类 {#组合类}
 > 设计一个学生类，该类与MyString类构成组合类；重新设计学生列表类。
@@ -1566,4 +1566,4 @@ int main() {
 
 运行的效果为
 
-![img](https://gcore.jsdelivr.net/gh/game-loader/picbase@master/uPic/1112H6w9uJ.png) 
+![img](https://fastly.jsdelivr.net/gh/game-loader/picbase@master/uPic/1112H6w9uJ.png)