diff --git a/README b/README
index 5a5d695819..b996c6cff5 100644
--- a/README
+++ b/README
@@ -1,3 +1,5 @@
+HITSZ OS-lab using xv6-riscv as experimental test
+
 xv6 is a re-implementation of Dennis Ritchie's and Ken Thompson's Unix
 Version 6 (v6).  xv6 loosely follows the structure and style of v6,
 but is implemented for a modern RISC-V multiprocessor using ANSI C.