diff --git a/README.md b/README.md
index 60a7bcf..ec6af0f 100644
--- a/README.md
+++ b/README.md
@@ -27,8 +27,8 @@
 
 ### Pre-requests
 
-* Your server's network type should be Full-cone NAT.
-    > If you don't known what it means, just do it to test.
+* Your server's network type should be [Full-cone NAT](https://en.wikipedia.org/wiki/Network_address_translation#Methods_of_translation).
+  > If you don't known what it means, no worries, just continue.
 
 * If your server is behind a firewall or a household router, you probably need to enable [UPnP](https://en.wikipedia.org/wiki/Universal_Plug_and_Play) or do a [port forwarding](https://en.wikipedia.org/wiki/Port_forwarding) to your server on your router since they may block all incoming traffics.
 
@@ -36,7 +36,7 @@
 
 Please check [mnh_server](https://github.com/hzyitc/mnh_server).
 
-> Only `mnhv1` is currently supported, more protocols will be added in the future, such as [STUN](https://en.wikipedia.org/wiki/STUN).
+> Only `mnhv1` protocol is currently supported, more protocols will be added in the future, such as [STUN](https://en.wikipedia.org/wiki/STUN).
 
 ### Run mnh
 
@@ -52,25 +52,28 @@ Flags:
   -p, --port int         The local hole port which incoming traffics access to
   -t, --service string   Target service address. Only need in proxy mode (default "127.0.0.1:80")
 
-  -u, --disupnp          Disable UPnP
+  -u, --disable-upnp     Disable UPnP
 
   -h, --help             help for mnh
 ```
 
-Running a quick test with UPnP helping: 
+Example:
 
 ```
 ./mnh --server server.com:12345 --id test
 ```
 
-Expose access to a local web server with UPnP helping:
+Expose a local web server:
 
 ```
 ./mnh --server server.com:12345 --id web --mode proxy --service 127.0.0.1:80
 ```
 
-Expose access to a local web server without UPnP helping (You probably need to do a port forwarding on your router):
+`mnh` will attempt to request UPnP port forwarding by default.
 
+You can disable it by adding `--disable-upnp`, make sure you have set up port forwarding correctly.
+(See [Pre-requests](#pre-requests))
+
+```
+./mnh --server server.com:12345 --id web --mode proxy --service 127.0.0.1:80 --port 8888 --disable-upnp
 ```
-./mnh --server server.com:12345 --id web --mode proxy --service 127.0.0.1:80 --port 8888 --disupnp
-```
\ No newline at end of file
diff --git a/README_zh.md b/README_zh.md
index 85f791b..c0b7ccf 100644
--- a/README_zh.md
+++ b/README_zh.md
@@ -29,7 +29,7 @@
 ### 要求
 
 1. 你的网络必须是Full-cone型NAT。
-    > 如果你不知道这句话是什么意思，尽管试试这个程序。
+   > 如果你不知道这句话是什么意思，尽管试试这个程序。
 
 2. 如果你的服务在防火墙或者家用路由后面，那么你需要在路由上开启[UPnP](https://en.wikipedia.org/wiki/Universal_Plug_and_Play)或者设置[端口转发](https://en.wikipedia.org/wiki/Port_forwarding)，因为大部分家用路由会阻止入站连接。
 
@@ -53,12 +53,12 @@ Flags:
   -p, --port int         本地洞端口，入口流量将会访问这个端口
   -t, --service string   目标服务地址. 仅proxy模式需要 (默认为 "127.0.0.1:80")
 
-  -u, --disupnp          禁用UPnP
+  -u, --disable-upnp          禁用UPnP
 
   -h, --help             输出本帮助
 ```
 
-使用UPnP协助运行一次快速测试: 
+使用UPnP协助运行一次快速测试:
 
 ```
 ./mnh --server server.com:12345 --id test
@@ -73,5 +73,5 @@ Flags:
 不使用UPnP协助暴露本地Web服务器（你可能需要再路由上设置端口转发）:
 
 ```
-./mnh --server server.com:12345 --id web --mode proxy --service 127.0.0.1:80 --port 8888 --disupnp
+./mnh --server server.com:12345 --id web --mode proxy --service 127.0.0.1:80 --port 8888 --disable-upnp
 ```
\ No newline at end of file
diff --git a/main.go b/main.go
index 5afd2fc..7de84f1 100644
--- a/main.go
+++ b/main.go
@@ -16,10 +16,9 @@ import (
 
 var rootCmd = &cobra.Command{
 	Use:   "mnh",
-	Short: "A tool thats help to punch nat hole so that peer can directly connect to your NATed server without client.",
-	Long: `mnh is a tool that makes exposing a port behind NAT possible.
-mnh client will produce an ip:port pair for your NATed server which can be used for public access.`,
-
+	Short: "A NAT hole punching tool that allows peers directly connect to your NATed server without client.",
+	Long: "mnh is a tool that makes exposing a port behind NAT possible.\n" +
+		"mnh client will produce an ip:port pair for your NATed server which can be used for public access.",
 	Run: func(cmd *cobra.Command, args []string) {
 		trueMain()
 	},
@@ -45,7 +44,7 @@ func cmdRegister(cmd *cobra.Command) {
 	cmd.PersistentFlags().IntVarP(&port, "port", "p", 0, "The local hole port which incoming traffics access to")
 	cmd.PersistentFlags().StringVarP(&service, "service", "t", "127.0.0.1:80", "Target service address. Only need in proxy mode")
 
-	cmd.PersistentFlags().BoolVarP(&upnpD, "disupnp", "u", false, "Disable UPnP")
+	cmd.PersistentFlags().BoolVarP(&upnpD, "disable-upnp", "u", false, "Disable UPnP")
 }
 
 func main() {