https://techcrunch.com/2018/06/12/valve-is-bringing-an-official-version-of-steam-to-china/

Valve is officially bringing its Steam game platform to China as it aims to take a chunk of the world’s largest market of gamers.

Valve said it will work with local partner Perfect World, which it previously collaborated on to release major games Dota 2 and Counter-Strike: Global Offensive. Shanghai-based Perfect World will control local promotional, the selection of games and distribution. There’s no confirmed date for when the Steam China service will go live.