diff --git a/app/helpers/projects_helper.rb b/app/helpers/projects_helper.rb
index 2728b7546..99cf0e01a 100644
--- a/app/helpers/projects_helper.rb
+++ b/app/helpers/projects_helper.rb
@@ -166,6 +166,20 @@ module ProjectsHelper
     end
   end
 
+  def ai_shang_v4_url(project)
+    url = EduSetting.get("ai_shang_url") || "https://shang.gitlink.org.cn"
+    case project.identifier.to_s.downcase
+    when nil                   then ""
+    when 'rails'               then "#{url}/v2/getIndexData?repo_login=rails&repo_name=rails"
+    when 'jittor'              then "#{url}/v2/getIndexData?repo_login=Jittor&repo_name=jittor"
+    when 'paddle'              then "#{url}/v2/getIndexData?repo_login=PaddlePaddle&repo_name=Paddle"
+    when 'vue'                 then "#{url}/v2/getIndexData?repo_login=vuejs&repo_name=vue"
+    when 'bootstrap'           then "#{url}/v2/getIndexData?repo_login=twbs&repo_name=bootstrap"
+    when 'tensorflow'          then "#{url}/v2/getIndexData?repo_login=tensorflow&repo_name=tensorflow"
+    else ''
+    end
+  end
+
   def ai_shang_v3_url(project)
     url = EduSetting.get("ai_shang_v3_url") || "https://entropy.ingress.isa.buaanlsde.cn"
     case project.identifier.to_s.downcase
diff --git a/app/views/project_trends/index.json.jbuilder b/app/views/project_trends/index.json.jbuilder
index 14f975236..abfd651ef 100644
--- a/app/views/project_trends/index.json.jbuilder
+++ b/app/views/project_trends/index.json.jbuilder
@@ -17,4 +17,5 @@ end
 json.ai_shang_v1_url ai_shang_v1_url(@project)
 json.ai_shang_v2_url ai_shang_v2_url(@project)
 json.ai_shang_v3_url ai_shang_v3_url(@project)
+json.ai_shang_v4_url ai_shang_v4_url(@project)