The only place in China where I have experienced a tipping environment is at a hotel. After you have checked into your hotel, and if you are staying in a nice facility, there may be a bellman available to assist you with your luggage.
He’ll probably escort you to your room ― unless the elevator is too crowded for your luggage and his cart. If the bellman delivers your luggage, you should tip him. That is standard. How much? Usually 10RMB is the expected amount to tip your bellman regardless of how many bags are involved.
The good news is that in China, you don’t tip taxi drivers or restaurant servers!
Learn more in my book Lessons from China: A Westerner’s Cultural Education