Address: Building 5, No.3, Yanjingli Zhongjie, East Fourth Ring Road, Chaoyang District, Beijing
About 100 meters north of Ciyunsi Bridge
You have to take the 639 to get off at Ciyunsi, and then get off the bus and go back (west) to Ciyunsi Bridge. After that, cross the road to the southwest corner of the bridge, then cross the road again, to the northwest corner of the bridge, after that, keep walking 100 meters to the Kai Tai on the left hand side, your right is the East Fourth Ring Road Oh.
I don't know if I'm explaining this clearly.
Option 1: [Direct]
Take 639 (Beijing Station East-Liguozhuang) to Beijing Zhanqianjie Station, and get off at Ciyunsi Station; the total distance is about 8.4 kilometers.
Option 2: [1 transfer]
Take 729 (Chengheyuan District-Dongba Building Material City) at Beijing Railway Station Qianjie Station and get off at Hujialou East Station, then take 112 (Liangguo Factory-Shilibao) at Xiaozhuangjiakou East Station and get off at Ciyunsi Station; the total distance is about 7.7 kilometers.
Option 3: [1 transfer]
Take 639 (Beijing Station East-Liguozhuang) at Beijing Station Qianjie Station and get off at Hongmiaojiaodong Station; transfer to 382 (Xiaozhuang-Shuangqiao Farm) at Hongmiaojiaodong Station and get off at Dongbalizhuang Station; the total distance is about 8.4 kilometers.
Option 4: [Transfer 1 time]
Take 668 (Beijing Station East-Jingdong Yunqiao Building Material City) at Beijing Station Qianjie Station and get off at Yong'anli Junction West Station; transfer to 639 (Beijing Station East-Liguozhuang) at Yong'anli Junction North Station and get off at Ciyunsi Station; the total distance is about 6.8 kilometers.
Option 5: [Transfer 1 time]
Take Branch 728 (Beijing Station East-Jingdong Yunqiao Building Material City) at Beijing Station Qianjie Station and get off at Yong'anli Junction West Station; transfer to 639 (Beijing Station East-Liguozhuang) at Yong'anli Junction North Station and get off at Ciyun Temple Station; the total distance is about 6.8 kilometers.
Option 6: [Transfer 1 time]
Take 640 (Beijing Station East - Shunyi Halfbidian) at Beijing Station Qianjie Station and get off at Beijing Pharmaceutical Factory Station; transfer to 639 (Beijing Station East - Liguozhuang) at Beijing Pharmaceutical Factory Station and get off at Ciyunsi Station; the total distance is about 8.4 kilometers.