For tipping, its not compulsory but a kind of encouragement for providing good service for both the drivers and guides.
If you are a group for 1-4 ?and are happy with our service you can tip the driver (for tours) 80CNY to 100CNY per day and the guide could be twice as much as the driver; if you are a group of 5- 8 people and you can tip the driver for 100CNY-180CNY per day and the guide can be twice as much as the driver; ?If you are over 10 people and are happy with our service you can tip the driver ( for tours ) 200CNY to 250CNY per-day and the guide could be twice as much as the driver .
It’s quite flexible and you can tip more or less and it’s up to you.