How can I go to Badaling Greatwall from Babaoshan?

From Babaoshan, you can use the local subway line 1 to reach Fuxingmen Station where you can change to line 2 to reach Jishuitan Station. Get out of the station, you can follow the direction boards to reach Deshengmen Bus Station. There you can easily find the direct bus 919 to reach the Badaling easily.