China Is Cashless, for the most part.
The biggest culture shock for most travelers is realizing China is almost completely cashless. From street vendors to taxis, mobile wallets are mandatory. Carrying foreign currency won't help you at a noodle stall. Set up Alipay or WeChat Pay before you board the plane.
However, I would like to add that if there is a disruption in your mobile payment apps, you can use cash. But expect some funny glances from the cashiers.
u/chinaculturebrokers — 9 days ago