diff --git a/source/_posts/homework4.md b/source/_posts/homework4.md
index e4d733b..030d384 100644
--- a/source/_posts/homework4.md
+++ b/source/_posts/homework4.md
@@ -1,5 +1,5 @@
 ---
-title: 第四次作业
+title: 第四次作业（题目）
 mathjax: true
 date: 2020-11-04 23:10:54
 tags: