What is fastest way to go from novotel xinqiao to badaling great wall, train or bus?

First you need to take the subway to reach Dengshengmen Bus Station and then take bus No. 916 to reach the wall.
For the subway route: Take subway line 5 from Chongwenmen Station near your hotel to Yonghegong Station and then change to line 2 to reach Gulongdajie Station. After you need to take a taxi to reach the bus station on the east of the Deshengmen Arrow Tower.
Taking the bus 916 will cost you 12RMB (4.8 by smart card) and 1.5 hours to reach. The subway fare is about 2 RMB.