From Beijing to Zunyi in the west, take a taxi to Maocaopu (only this station has a car to Chishui) and take a bus to Chishui. As for how many flights there are a day, I don't know. The fare is about 120.
PS: The transit time in Chongqing is slightly shorter than that in Zunyi. Please choose according to your actual situation.
If you get off at Zunyi and take a taxi to Maocaopu Station, you will probably be beheaded. He took 10 yuan when it could have been done for 5 yuan!