Aehtoosham S.
Google
Hengshan Mountain is near to the hanging temple, its get crowded and jams on Chinese public holidays. It takes about 1 1/2 hour ride from datong city. Worth while to negotiate with the driver for the whole journey. May need to pay additional parking and entry ticket for the driver, acts as tourist guide and safeguard your return home as he stays with you.
The climb is by stairs while, you need to climb hundreds if not thousands of stairs. Some area are steep, and small steps.
The view is beautiful, it host many temple in the area. You need a whole day to complete both visit, try to spend at least 2 days in Datong if you plan this trip.