Mini programs refer to lightweight applications in mobile applications that users can use directly in the main application without downloading and installing additional applications. WeChat mini program is a form of mini program provided by WeChat, which users can open and use in WeChat.

WeChat mini programs can implement a variety of functions, including but not limited to the following aspects:

1. Service mini programs: providing various services, such as takeout ordering and hotel reservations , travel services, express delivery inquiries, etc.

2. Social mini-programs: Provide social functions, such as online chat, sharing updates, posting to Moments, etc.

3. Retail mini-programs: Provide online shopping functions, allowing users to browse products, place orders, make payments, etc.

4. Media applets: provide browsing and playback of news, information, music, videos and other media content.

5. Game mini-programs: Provide various mini-games, allowing users to play online and complete levels and challenges.

6. Tool applets: Provide various practical tools, such as weather queries, calculators, translation tools, music players, etc.

WeChat mini programs are lightweight, fast and convenient. Users do not need to download and install additional applications and can open and use them directly in WeChat. They provide a wealth of functions and services, allowing users to gain more convenience and experience in WeChat applications.