(The WeChat Mini Program is an application that can be used without downloading and installing. Realize the dream app "at your fingertips". Users can open apps by scanning or searching. It also embodies the concept of "go away after use", and users do not need to care whether too many applications are installed. WeChat "mini programs" can provide developers with WeChat-based development components such as forms, navigation, maps, media, and locations, allowing developers to build HTML 5 applications in WeChat web pages. At the same time, WeChat has also opened interfaces such as login and WeChat payment, making this "small program" a higher level. It can be associated with the user's WeChat account. WeChat defines "mini programs" as "a new kind of application". WeChat emphasizes that small programs, subscription accounts, service accounts, and enterprise accounts are currently parallel systems.)