docs: add README_CN

Signed-off-by: PennyYoon <525296438@qq.com>
Co-authored-by: ZhangJian He <shoothzj@gmail.com>

README.md

@@ -1,6 +1,8 @@
 # opengemini-client-go
 opengemini-client-go is a Go client API for OpenGemini. 
 
+English | [中文简体](README_CN.md) 
+
 OpenGemini is an open-source time series database, find more about OpenGemini at https://github.com/openGemini/openGemini
 
 ## Requirements
@@ -63,6 +65,7 @@ if err != nil {
 	fmt.Println(err)
 }
 ```
+
 Write batch points:
 
 ```go

README_CN.md

@@ -0,0 +1,114 @@
+# opengemini-client-go
+opengemini-client-go 是一个基于go语言的 OpenGemini 客户端开源库
+
+中文简体 | [English](README.md)
+
+OpenGemini 是华为云开源的一款云原生分布式时序数据库，获取更多关于 OpenGemini 的信息可点击 https://github.com/openGemini/openGemini
+
+## 要求
+
+- Go 1.19
+
+## 用法
+
+引入客户端库：
+
+<i><font color=gray>示例使用点引用法，用户可结合具体需要选择适合的引用方式。</font></i>
+
+```go
+import . "github.com/openGemini/opengemini-client-go/opengemini"
+```
+
+创建客户端：
+
+```go
+config := &Config{
+	Addresses: []*Address{
+		{
+			Host: "127.0.0.1",
+			Port: 8086,
+		},
+	},
+}
+client, err := NewClient(config)
+if err != nil {
+	fmt.Println(err)
+}
+```
+
+创建数据库：
+
+```go
+exampleDatabase := "ExampleDatabase"
+err = client.CreateDatabase(exampleDatabase)
+if err != nil {
+	fmt.Println(err)
+	return
+}
+```
+
+写入单个点：
+
+```go
+exampleMeasurement := "ExampleMeasurement"
+point := &Point{}
+point.SetMeasurement(exampleMeasurement)
+point.AddTag("Weather", "foggy")
+point.AddField("Humidity", 87)
+point.AddField("Temperature", 25)
+err = client.WritePoint(exampleDatabase, point, func(err error) {
+	if err != nil {
+		fmt.Printf("write point failed for %s", err)
+	}
+})
+if err != nil {
+	fmt.Println(err)
+}
+```
+
+批量写入点位：
+
+```go
+exampleMeasurement := "ExampleMeasurement"
+bp := &BatchPoints{}
+var tagList []string
+tagList = append(tagList, "sunny", "rainy", "windy")
+for i := 0; i < 10; i++ {
+	p := &Point{}
+	p.SetMeasurement(exampleMeasurement)
+	p.AddTag("Weather", tagList[rand.Int31n(3)])
+	p.AddField("Humidity", rand.Int31n(100))
+	p.AddField("Temperature", rand.Int31n(40))
+	p.SetTime(time.Now())
+	bp.AddPoint(p)
+	time.Sleep(time.Nanosecond)
+}
+err = client.WriteBatchPoints(exampleDatabase, bp)
+if err != nil {
+	fmt.Println(err)
+}
+```
+
+执行查询：
+
+```go
+q := Query{
+	Database: exampleDatabase,
+	Command:  "select * from " + exampleMeasurement,
+}
+res, err := client.Query(q)
+if err != nil {
+	fmt.Println(err)
+}
+for _, r := range res.Results {
+	for _, s := range r.Series {
+		for _, v := range s.Values {
+			for _, i := range v {
+				fmt.Print(i)
+				fmt.Print(" | ")
+			}
+			fmt.Println()
+		}
+	}
+}
+```