diff --git a/Answers/week1-challenge-04/shiyanlou_user.py b/Answers/week1-challenge-04/shiyanlou_user.py
index 99fd8aa..268c640 100644
--- a/Answers/week1-challenge-04/shiyanlou_user.py
+++ b/Answers/week1-challenge-04/shiyanlou_user.py
@@ -4,18 +4,16 @@
 
 def user_info(user_id):
 
-    url = "https://www.shiyanlou.com/users/{}/".format(user_id)
+    url = "https://www.lanqiao.cn/users/{}/".format(user_id)
     content = requests.get(url)
 
     if content.status_code == 200:
         tree = html.fromstring(content.text)
-        user_name = tree.xpath(
-            '//div[@class="user-meta"]/span/text()')[0].strip()
-        user_level = tree.xpath(
-            '//div[@class="user-meta"]/span/text()')[1].strip()[1:]
-        join_date = tree.xpath(
-            '//span[@class="user-join-date"]/text()')[0].strip()[:10]
-        return user_name, int(user_level), join_date
+        # 首先选取所以 div 元素，要求其 class 属性中包含 name 字段
+        # 再取 div 下的 span
+        user_name = tree.xpath("//div[contains(@class, 'name')]/span/text()")[0].strip()
+        user_level = tree.xpath("//div[contains(@class, 'name')]/span/text()")[1].strip()[1:]
+        return user_name, int(user_level)
     else:
-        user_name, user_level, join_date = (None, None, None)
-        return user_name, user_level, join_date
+        user_name, user_level = (None, None)
+        return user_name, user_level
\ No newline at end of file
diff --git a/README.md b/README.md
index 31dac9e..37b995d 100644
--- a/README.md
+++ b/README.md
@@ -1,13 +1,14 @@
 <div align="center">
   <h1><img src="https://static.shiyanlou.com/img/louplus/louplus_logo.png"></h1>
-  <b>实验楼《楼+ 数据分析与挖掘实战》课程仓库｜<a href="https://www.shiyanlou.com/louplus/dm">课程报名</a></b>
+  <b>蓝桥云课《楼+ 数据分析与挖掘实战》课程仓库｜<a href="https://www.shiyanlou.com/louplus/dm">课程报名</a></b>
 </div>
 
 <br />
 
-### 参考答案
+主分支下方包含最新课程的参考答案，历史开班课程的参考答案移步相应分支查看。
+
+### 其他班级
 
-- [随到随学课程挑战参考答案](https://github.com/shiyanlou/louplus-dm/tree/v3/Answers)
 - [第 12-13 期挑战参考答案](https://github.com/shiyanlou/louplus-dm/tree/v3/Answers)
 - [第 07-11 期挑战参考答案](https://github.com/shiyanlou/louplus-dm/tree/v2/Answers)
 - [第 01-06 期挑战参考答案](https://github.com/shiyanlou/louplus-dm/tree/master/Answers)