How can I get from Badaling to Mutianyu?

To rent a car to travel between is the best way.
By bus, you need to transfer twice and it takes much time. Anyway, at Badaling you can take bus no. 919 to get off at Yanqing Nancaiyuan Station, where you can transfer to bus no. H60 to Yujiayuan Station. Then transfer to Tourism Bus no. 867 to Mutianyu directly.