diff --git a/README.md b/README.md
index 55cb8b7..bce8f0f 100644
--- a/README.md
+++ b/README.md
@@ -1 +1 @@
-# Software Engineering Methodology Project
+软件工程方法学项目
diff --git a/README_backup.md b/README_backup.md
new file mode 100644
index 0000000..55cb8b7
--- /dev/null
+++ b/README_backup.md
@@ -0,0 +1 @@
+# Software Engineering Methodology Project
diff --git a/doc/说明.txt b/doc/说明.txt
new file mode 100644
index 0000000..675af72
--- /dev/null
+++ b/doc/说明.txt
@@ -0,0 +1 @@
+文档目录
diff --git a/hello world b/hello world
deleted file mode 100644
index af784fa..0000000
--- a/hello world	
+++ /dev/null
@@ -1,5 +0,0 @@
-print("Hello, World!")
-def greet(name):
-    return f"Hello, {name}!"
-if __name__ == "__main__":
-    print(greet("Team"))
\ No newline at end of file
diff --git a/src/说明.txt b/src/说明.txt
new file mode 100644
index 0000000..7055970
--- /dev/null
+++ b/src/说明.txt
@@ -0,0 +1 @@
+源代码目录