From Huangshan to Jiuhua Mt. And take flight from Hefei to Saigon?

1. You can take a direct bus to the mountain from Huangshan Scenic Area Bus Station at Tangkou Town. The bus departs at 14:20, and the fare is CNY 54. The trip takes about 2 hours.
2. Upon arrival, you can stay at Jiarun Gloria Grand Hotel at Kecun New Area, at the foot of the mountain. The hotel provides clean environment and nice service. A standard room costs CNY 400-800 per night. You can try to book a room by dialing 86-0566-2838855.
3. There is no direct flight between Hefei and Saigon. You may make a transit at Guangzhou Airport. The airport is about 150 miles (240km). You may take a bus to Hefei South Bus Station from the mountain. Then, take shuttle bus line 3 to the airport.

Thank you Frankie. I just found out some info from a friend who in China and want to share here as well for other reference:

►From Huangshan Tangkou Bus Station
Huangshan Tangkou Bus Station is near to the Huangshan Mountain Scenic Area. There are two coaches leaving for the mountain every day at this station. They depart at 6:30 a.m. and 1:30 p.m. every day. It takes about 3 hours to reach JHS Bus station. Then you can change to a minibus or a van to reach the mountain Scenic Area.

►From Tunxi Bus Station
There is only one direct bus/coach at Tunxi Bus Station which takes you directly to mountain Scenic Area. it usually departs at 1:30 p.m. and takes about 3 hours.

Flight: I just found another airport right at Jiuhuashan: Chizhou Jiuhuashan Airport (JUH). Yeah you are right, we have to transit in Guangzhou. But if taking flight from JUH, we don't need to travel to Hefei or Huangshan.

Thanks for your recommendation for hotels. It looks great.

Thank you again Frankie.