diff --git a/configs/config.go b/configs/config.go
index 10a7a7e..2baa224 100644
--- a/configs/config.go
+++ b/configs/config.go
@@ -45,6 +45,7 @@ type Basic struct {
 	CauseStop string `json:"cause_stop"`
 }
 
+// Get config from json file
 func GetConfig() (config Config, err error) {
 	content, err := os.ReadFile("config.json")
 	if err != nil {
diff --git a/internal/bilibili.go b/internal/bilibili.go
index 607c83d..9ff96a8 100644
--- a/internal/bilibili.go
+++ b/internal/bilibili.go
@@ -12,6 +12,7 @@ import (
 	"github.com/ssdomei232/goodBaby/configs"
 )
 
+// check tmp dir exist
 func EnsureTmpDirectory() error {
 	_, err := os.Stat("tmp")
 	if os.IsNotExist(err) {
@@ -29,41 +30,41 @@ func EnsureTmpDirectory() error {
 }
 
 func isCookiesExpired(cookiesString string) bool {
-	// 解析cookie中的过期时间
+	// parase expires date from cookie string
 	lines := strings.SplitSeq(cookiesString, "\n")
 	for line := range lines {
 		if strings.Contains(line, "Expires=") {
 			// 提取过期时间字符串
 			expireStr := ""
-			parts := strings.Split(line, ";")
-			for _, part := range parts {
+			parts := strings.SplitSeq(line, ";")
+			for part := range parts {
 				part = strings.TrimSpace(part)
-				if strings.HasPrefix(part, "Expires=") {
-					expireStr = strings.TrimPrefix(part, "Expires=")
+				if after, ok := strings.CutPrefix(part, "Expires="); ok {
+					expireStr = after
 					break
 				}
 			}
 
 			if expireStr != "" {
-				// 解析过期时间
+				// phrase expirres date
 				expireTime, err := http.ParseTime(expireStr)
 				if err != nil {
 					log.Printf("解析过期时间失败: %v", err)
-					return true // 如果解析失败，认为已过期
+					return true // if phrase failed, cookie expired
 				}
 
-				// 比较过期时间和当前时间
+				// compare expires date and now
 				if time.Now().After(expireTime) {
-					return true // 已过期
+					return true // expired
 				}
 			}
 		}
 	}
 
-	return false // 未过期
+	return false // not expired
 }
 
-// 二维码登录
+// Qrcode login
 func LoginWithQRCode(biliClient *bilibili.Client) {
 	qrCode, err := biliClient.GetQRCode()
 	if err != nil {
@@ -86,11 +87,11 @@ func LoginWithQRCode(biliClient *bilibili.Client) {
 
 	log.Println("登录成功")
 
-	// 保存新获取的cookie
+	// save new cookie
 	saveCookies(biliClient)
 }
 
-// 保存cookie到文件
+// save cookie to file
 func saveCookies(client *bilibili.Client) {
 	cookiesString := client.GetCookiesString()
 	err := os.WriteFile("tmp/cookies.txt", []byte(cookiesString), 0644)
diff --git a/main.go b/main.go
index 004c924..a5cd2c2 100644
--- a/main.go
+++ b/main.go
@@ -27,6 +27,7 @@ var biliClient *bilibili.Client
 var cookieCheckTimer *time.Ticker
 
 func init() {
+	// Get COnfig
 	config, err := configs.GetConfig()
 	if err != nil {
 		log.Printf("获取配置文件失败: %v", err)
@@ -38,15 +39,15 @@ func init() {
 		duration = time.Duration(config.DisconnectDuration) * time.Hour
 	}
 
-	// 检查并创建tmp目录
+	// Check and create tmp dir
 	if err := internal.EnsureTmpDirectory(); err != nil {
 		log.Printf("创建tmp目录失败: %v", err)
 	}
 
-	// 初始化bilibili客户端
+	// Init Bilibili Clinet
 	biliClient = bilibili.New()
 	initBilibili()
-	startCookieChecker() // 启动定期检查cookie有效性
+	startCookieChecker() // Check Bilibili cookie
 
 	internal.InitTimerManager(duration)
 	timer = time.NewTimer(duration)
@@ -69,12 +70,8 @@ func trigger(config configs.Config) {
 
 func main() {
 	r := gin.Default()
-
-	// 设置嵌入的模板
 	templFS, _ := fs.Sub(templateFiles, "templates")
 	r.SetHTMLTemplate(loadTemplates(templFS))
-
-	// 提供嵌入的静态文件
 	staticFS, _ := fs.Sub(staticFiles, "static")
 	r.StaticFS("/static", http.FS(staticFS))
 
@@ -89,18 +86,18 @@ func indexPage(c *gin.Context) {
 }
 
 func initBilibili() {
-	// 尝试加载已存储的cookie
+	// try cached cookie
 	if !internal.LoadCookies(biliClient) {
-		// 如果没有有效cookie，则进行二维码登录
+		// if cookie check failed, request qrcode login
 		internal.LoginWithQRCode(biliClient)
 	} else {
 		log.Println("使用已存储的有效cookie登录")
 	}
 }
 
-// 启动cookie定期检查
+// Enable periodic cookie checks
 func startCookieChecker() {
-	// 每小时检查一次cookie有效性
+	// check cookie per hour
 	cookieCheckTimer = time.NewTicker(1 * time.Hour)
 	go func() {
 		for {
@@ -133,7 +130,7 @@ func handleSignal(c *gin.Context) {
 	log.Println("触发信号")
 }
 
-// loadTemplates 从嵌入的文件系统加载模板
+// loadTemplates loads templates from the embedded file system
 func loadTemplates(filesystem fs.FS) *template.Template {
 	templ := template.Must(template.New("").ParseFS(filesystem, "*.html"))
 	return templ