How can I get to Mutianyu by train/bus from Beijing (Shijinshang)?

Ann, you need walk to Jinanqiaobei Station and take Yuntong 116 bus from there to Pingguoyuan subway Station. Then walk 160 meters to find the subwa station to take subway line 1. Getting off at Jianguomen Station, you can find subway line 2. Please take line 2 to get off at Dongzhimen Station, exit at E entrance to find No. 916 bus. Then you can take this bus to Huairou Bus Station and take a minivan to Mutianyu. It costs around CNY 20 to 30 per person.