What bus from Beijing can I catch to Mutianyu great wall

In Dongzhimen bus stop, you can take the bus No.867 and get off at Mutianyuhuandao. Then walk around 3min to the ticket office of the great wall. The bus leaves at 10:00 and 12:00.

Or you can take then bus No.916 to Huairou North Street, then hire a taxi or car to the great wall.