please to give the updates buses timetables from Pingxiang to Nanning Airport?

The bus schedules are 12:00, 14:30, 18:30 and 20:30. The ticket fare is CNY 130 per person.

thanks for the reply and do you know how long does it take the journey direct to the airport?
Perhaps on the morning time there are also some direct buses to bus station after that I can reach by taxi the airport?

As I know, you can take a direct bus to the airport from Xiangcheng International Hotel at No.1-2 Beida Road. The buses depart at 6:00, 13:30, and 15:30. The trip takes about 2.5 hours, and the fare is CNY 80 per person.
Or, you can take a bus to Langdong Bus Station. The first bus departs at 6:20, and it takes about 2 hours. Upon arrival, you may take a taxi to the hotel for about CNY 150. :)