Chat——Wechat Shopping——Taobao, Jingdong, Pinduoduo Payment——Alipay Eating——Meituan (food, medicine, ingredients, flowers delivery etc.) Map——Gaode Map/高德地图 Online car hailing——Didi, Caocao, T3... Video——Tik Tok, Bilibili etc. They are popular because these functions are highly need in life, and they are very convenient.

Chat——Wechat Shopping——Taobao, Jingdong, Pinduoduo Payment——Alipay Eating——Meituan (food, medicine, ingredients, flowers delivery etc.) Map——Gaode Map/高德地图 Online car hailing——Didi, Caocao, T3... Video——Tik Tok, Bilibili etc. They are all popular because the functions are highly needed in life, and they are very convenient.