diff --git a/README.md b/README.md
index 238bc62..9754f35 100644
--- a/README.md
+++ b/README.md
@@ -4,14 +4,16 @@
 [![GoDoc](https://godoc.org/github.com/Tnze/go-mc?status.svg)](https://godoc.org/github.com/Tnze/go-mc)
 [![Go Report Card](https://goreportcard.com/badge/github.com/Tnze/go-mc)](https://goreportcard.com/report/github.com/Tnze/go-mc)
 
-There's some library in Go support you to create your Minecraft client or server. 
+There's some library in Go support you to create your Minecraft client or server.  
+这是一些Golang库，用于帮助你编写自己的Minecraft客户端或服务器，
 - [x] Mojang authenticate
 - [x] Minecraft network protocal
 - [x] Parse chat message
 - [x] Simple MC robot lib
 - [ ] Parse NBT
 
-Some examples are at `/cmd` folder.
+Some examples are at `/cmd` folder.  
+有一些例子在cmd目录下
 
 > `1.13.2` version is at [gomcbot](https://github.com/Tnze/gomcbot).
 
diff --git a/authenticate/authenticate.go b/authenticate/authenticate.go
index 47ab7bf..07c8ecb 100644
--- a/authenticate/authenticate.go
+++ b/authenticate/authenticate.go
@@ -1,5 +1,7 @@
 package authenticate
 
+//Simple yggdrasil-minecraft-login method.
+
 import (
 	"bytes"
 	"encoding/json"
diff --git a/chat/chatMsg.go b/chat/chatMsg.go
index 07c4a0f..7b68d08 100644
--- a/chat/chatMsg.go
+++ b/chat/chatMsg.go
@@ -31,9 +31,9 @@ type jsonChat struct {
 //UnmarshalJSON decode json to Message
 func (m *Message) UnmarshalJSON(jsonMsg []byte) (err error) {
 	if jsonMsg[0] == '"' {
-		err = json.Unmarshal(jsonMsg, &m.Text)
+		err = json.Unmarshal(jsonMsg, &m.Text) //Unmarshal as jsonString
 	} else {
-		err = json.Unmarshal(jsonMsg, (*jsonChat)(m))
+		err = json.Unmarshal(jsonMsg, (*jsonChat)(m)) //Unmarshal as jsonChat
 	}
 	return
 }