Tips or gratuities are the main source of income of tour guide and driver, and therefore you are expected to leave tips along your China travel. You could tip the guide and driver according to the satisfaction about the service they offered. It is not common to leave tips for waiters and bellboys in hotels or restaurants because their service charge has been included in the bills. Although tipping is commonplace, it is not compulsive and is totally decided on your own.
The quotation offered by China Tour exclude the tipping since the availability and amount of it is totally decided by your discretion to their service. Since tipping is always a confusing matter, Chinatour.com offers the following tipping standard for your reference.
We recommend USD$8 per traveler per day to cover all tour guides and bus drivers. The details about tipping will be offered in the final tour document when your tour is approaching.
Again, whether you tip, and how much, is totally decided on your satisfaction to the service of our guides and drivers.