diff --git a/pkg/huashijie_api.go b/pkg/huashijie_api.go
index 9346f0f..db1fc4f 100644
--- a/pkg/huashijie_api.go
+++ b/pkg/huashijie_api.go
@@ -1,12 +1,15 @@
 package huashijie_api
 
 import (
+	"crypto/md5"
 	"fmt"
 	"io"
+	"log"
 	"math/rand"
 	"net/http"
 	"os"
 	"strings"
+	"time"
 )
 
 var XIAOMI_MODELS = []string{
@@ -23,6 +26,8 @@ var XIAOMI_MODELS = []string{
 	"MDE5",
 }
 
+var Logger = log.New(os.Stdout, "[huashijie_api] ", log.Ldate|log.Ltime|log.Lmsgprefix)
+
 func EnsureConnection(client http.Client) {
 	// https://app.huashijie.art/api/update/checkUpdate
 	req, err := http.NewRequest("GET", "https://app.huashijie.art/api/update/checkUpdate", nil)
@@ -49,6 +54,9 @@ func EnsureConnection(client http.Client) {
 	}
 }
 
+var cur_fake_user_id = -1
+var cur_fake_user_left = time.Now()
+
 func GetWorkDetailResponse(client http.Client, work_id string) ([]byte, int) {
 	endpoint := "https://app.huashijie.art/"
 	if os.Getenv("HSJ_ENDPOINT") == "pandapaint" {
@@ -58,14 +66,36 @@ func GetWorkDetailResponse(client http.Client, work_id string) ([]byte, int) {
 	if err != nil {
 		panic(err)
 	}
+
+	visitorId := "-1"
+	token := ""
+	if os.Getenv("HSJ_USERID") != "" {
+		visitorId = os.Getenv("HSJ_USERID")
+		if visitorId == "random" {
+			if cur_fake_user_left.Before(time.Now()) { // rotate [1, 15] minutes
+				cur_fake_user_left = time.Now().Add(time.Duration(rand.Intn(15)) * time.Minute)
+				// random [30000000, 40000000]
+				cur_fake_user_id = rand.Intn(40000000-30000000) + 30000000
+			}
+			visitorId = fmt.Sprintf("%d", cur_fake_user_id)
+		}
+
+		// fake token = md5(visitorId + "huashijie")
+		md5hash := md5.New()
+		md5hash.Write([]byte(visitorId + "huashijie"))
+		token = fmt.Sprintf("%x", md5hash.Sum(nil))
+
+		Logger.Println("USERID:", visitorId, "token:", token, "left", time.Until(cur_fake_user_left))
+	}
+
 	// q := req.URL.Query()
 	p := ""
 	// q.Add("visitorId", "-1")
-	p += "visitorId=-1"
+	p += "visitorId=" + visitorId
 	// q.Add("workId", work_id)
 	p += "&workId=" + work_id
 	// q.Add("cur_user_id", "-1")
-	p += "&cur_user_id=-1"
+	p += "&cur_user_id=" + visitorId
 	// q.Add("platform", "android")
 	p += "&platform=android"
 	os_version := rand.Intn(34-28) + 28
@@ -86,7 +116,7 @@ func GetWorkDetailResponse(client http.Client, work_id string) ([]byte, int) {
 	// q.Add("device_model", device_model)
 	p += "&device_model=" + device_model
 	// q.Add("token", "")
-	p += "&token="
+	p += "&token=" + token
 
 	if os.Getenv("HSJ_ENDPOINT") == "pandapaint" {
 		// q.Add("channel", "Panda.main")