Could you suggest the bus or subway from Beijing Qianmen to Mutianyu long distance bus station?

You could take subway line 2 from Qianmen to Dongzhimen and then take Bus 936 at Dongzhimen Transport Hub (not the one close to exits Dongzhimen Subway Station)to Mutianyu directly. The direct 936 bus are only available at 7am and 8:30am and get back at 2pm and 4pm. If you miss the buses, you can only take other 936 buses and 916 buses to Huairou first. Then transfer to Mutianyu then.

Thank you, How far from qianmen to mutianyu bus station?