diff --git a/cmd/main.go b/cmd/main.go
index c05281c..809ed73 100644
--- a/cmd/main.go
+++ b/cmd/main.go
@@ -9,14 +9,14 @@ import (
 )
 
 var usage = `
-	通过伪造ping，把udp流量通过远程服务器转发到目的服务器上。用于突破某些运营商封锁UDP流量。
-	By forging ping, the udp traffic is forwarded to the destination server through the remote server. Used to break certain operators to block UDP traffic.
+	通过伪造ping，把tcp/udp流量通过远程服务器转发到目的服务器上。用于突破某些运营商封锁TCP/UDP流量。
+	By forging ping, the tcp/udp traffic is forwarded to the destination server through the remote server. Used to break certain operators to block TCP/UDP traffic.
 
 Usage:
 
     pingtunnel -type server
 
-    pingtunnel -type client -l LOCAL_IP:4455 -s SERVER_IP -t SERVER_IP:4455
+    pingtunnel -type client -l LOCAL_IP:4455 -s SERVER_IP -t SERVER_IP:4455 -tcp 1
 
     -type     服务器或者客户端
               client or server
diff --git a/show.png b/show.png
deleted file mode 100644
index 39b0234..0000000
Binary files a/show.png and /dev/null differ