Well I been to China 12 times.Tomorrow will be my 13 in 26 months.
Cities I been to Shanghai, Suzhou,Hangzhou Beijing & Guilin .
I never tip a waiter/waitress.
My local chinese friends says we do not tip and that what I do.
Almost all hotel restaurants charge a 15% service charge- that enough for me.
If a bell hop takes my suitcase upstair and places correctly, I'll give him 10 rmb