Bus from New National Express Exchange Center (tangkou bus station) to Huangshan Railway Station

I'll be staying at Huangshan International Youth Hostel for 2 nights and have to catch my 8.41am train to Beijing at Huangshan Railway Station.

Is there any bus or taxi available around 6-7 am near the hostel? What is the bus line number?
If yes, then could you tell me where is the nearest bus stop and how much the fare is?

I appreciate if someone could give me the link for the bus schedule as I can't find it online.

Thank you!