Why can't WeChat receive crayons and new characters?

Wechat officially deleted this expression pack. According to relevant information, WeChat is a free application program that provides instant messaging service for smart terminals. Wechat supports fast sending of free voice messages, videos, pictures and texts across communication operators and operating system platforms through the network. At the same time, you can also enjoy the streaming media content through * * and location-based social plug-ins, such as shake, drift bottle, circle of friends, public platform, voice notepad and other service plug-ins.