diff --git a/README_EN.md b/README_EN.md
index 86e136c..befebd7 100644
--- a/README_EN.md
+++ b/README_EN.md
@@ -1,6 +1,6 @@
 # Machine Learning - Homework and Report
 
-* [中文说明](README_CN.md)
+* [中文说明](README.md)
 
 This material is the homework and report for course [Machine Learning](https://gitee.com/pi-lab/machinelearning_notebook). To master the course better, it is necessary to do programming practices, therefore, everyone need to do the homework and report diligently. Through these practices capabilities of problem solving of self learning can be boosted. 
 
diff --git a/homework_01_python/practice_projects.md b/homework_01_python/practice_projects.md
index e545c85..19e5221 100644
--- a/homework_01_python/practice_projects.md
+++ b/homework_01_python/practice_projects.md
@@ -1,4 +1,4 @@
-# 70个python练手项目
+# 70个Python练手项目