Get off at No.67, Zhixia Hutong, Beijing West Railway Station, get off at ***6 station, then cross the overpass to the opposite side, walk 200 meters eastward to Baolong Building or Railway Line 9 (on Beijing West Railway Station, under Liuliqiao, 2 stops), transfer to Metro Line 10 (northeast exit of Jijiamiao B, 5 stops), get off at 720 meters north, and walk to the 7th floor of Baolong Building.

Beijing Railway Station Metro Line 2 (Beijing Railway Station, Xuanwu Gate, 4 stops), transfer to Metro Line 4 Daxing Line (at the lower corner of the gate, 5 stops), and transfer to Metro Line 10 (at the northeast exit of Jijiamiao B, 2 stops). You can see Baolong Building when you go out, and walk to 2-7 18 on the 7th floor of Baolong Building.

That's all. hope this helps