I had to go to China for 1 week+ for work and was in the same boat. Found a few places that only take WeChat but I ask someone around to pay for me and give the

I had to go to China for 1 week+ for work and was in the same boat. Found a few places that only take WeChat but I ask someone around to pay for me and give them cash. More often than not it would be the person at the register. People are quite helpful if you ask nicely.