@Gina if you do Guangzhou, then a few travel tips for China, because it's literally its own planet.
A vpn that is KNOWN to work in China, setup beforehand. Sufshark with wire guard and region set to Japan worked mostly.
Alipay is a must, setup ahead of time, don't use a virtual card unless you can print a bank statement for it.
Didi for China (separate app) for uber-like.
Amap, maps in English that work.
And you good to go.