diff --git a/README.md b/README.md
index 2ce951b..ca8b7f9 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@
 
 [![Build Status](https://travis-ci.org/emmansun/gmsm.svg?branch=main)](https://travis-ci.org/emmansun/gmsm) [![Documentation](https://godoc.org/github.com/emmansun/gmsm?status.svg)](https://godoc.org/github.com/emmansun/gmsm) [![Release](https://img.shields.io/github/release/emmansun/gmsm/all.svg)](https://github.com/emmansun/gmsm/releases)
 
-This is a **SM2 sm2p256v1** implementation whose performance is similar like golang native NIST P256 under **amd64**, for implementation detail, please refer https://github.com/emmansun/gmsm/wiki.
+This is a **SM2 sm2p256v1** implementation whose performance is similar like golang native NIST P256 under **amd64**, for implementation detail, please refer [SM2实现细节](https://github.com/emmansun/gmsm/wiki/SM2%E6%80%A7%E8%83%BD%E4%BC%98%E5%8C%96).
 
 This is also a **SM3** implementation whose performance is similar like golang native SHA 256 under **amd64**, for implementation detail, please refer [SM3性能优化](https://github.com/emmansun/gmsm/wiki/SM3%E6%80%A7%E8%83%BD%E4%BC%98%E5%8C%96).
 
@@ -96,6 +96,6 @@ For **SM4** implementation, AES-NI is used under **amd64**, for detail please re
     pkg: github.com/emmansun/gmsm/sm4
     BenchmarkEncrypt-6   	 5881989	       206 ns/op	  77.75 MB/s	       0 B/op	       0 allocs/op
     BenchmarkDecrypt-6   	 5853994	       204 ns/op	  78.45 MB/s	       0 B/op	       0 allocs/op
-    BenchmarkExpand-6    	 2583012	       469 ns/op	      16 B/op	       1 allocs/op
+    BenchmarkExpand-6    	 5985129	       200 ns/op	       0 B/op	       0 allocs/op
     PASS
     ok  	github.com/emmansun/gmsm/sm4	6.193s