You don't need to apply for a health code. As long as we use smart phones, we can use Alipay or WeChat to add health codes. Our WeChat or Alipay are all real-name authentication. For example, on WeChat, we can click Pay to join the city service. You can also click Discover to enter the applet, and then add the health code. Alipay opens a city service to add a health code, which can be placed on the home page after success.