10 days
Most of China pays by phone, from taxis to street stalls. Visitors can now link a foreign card to Alipay or WeChat Pay and pay the same way, so set it up before you fly.
Shops, restaurants, metro gates and taxis all accept QR-code payments, and some small vendors take nothing else. Cards are accepted in big hotels and department stores, but rarely elsewhere.
Download Alipay, register with your phone number and add a Visa, Mastercard or other international card. You then scan the shop’s QR code or show your own code to pay.
WeChat is China’s main messaging app. Add a foreign card under Wallet to use WeChat Pay, which is handy for chatting with guides and hotels too.
Carry a little cash in yuan as a backup. ATMs at airports and major banks accept foreign cards.