https://techcrunch.com/2019/01/15/tiktok-challenges-wechat/

ByteDance, the world’s most-valued startup, just launched a new social media product under its Douyin brand in what many people see as a serious attempt to challenge WeChat.

Tencent has long dominated China’s social networking space with WeChat and QQ. WeChat claims to have one billion monthly active users worldwide, most of whom are in China. Its older sibling QQ managed to survive the country’s transition from PC to mobile and still have a good chunk of 800 million MAUs at last count.