diff --git a/doc/www.docx b/doc/hello.docx
similarity index 100%
rename from doc/www.docx
rename to doc/hello.docx
diff --git a/doc/你好.txt b/doc/你好.txt
deleted file mode 100644
index e69de29..0000000
diff --git a/doc/第四周实践任务报告.docx b/doc/第四周实践任务报告.docx
deleted file mode 100644
index 8ecfcfe..0000000
Binary files a/doc/第四周实践任务报告.docx and /dev/null differ