How much do tour guides from China to Thailand earn a month?

This depends on the market demand. There are a large number of freelance tour leaders (of course, the professional level is good or bad), so the supply of market tour leaders exceeds the demand, and the wages of full-time and professional tour leaders in some clubs can't go up. I think it's below 2000 yuan/month. But now some people go out to work by themselves and don't give others a monthly salary. These people do better than 3000-5000.