Take subway lines 9, 4, 15 and 987. Baidu map shows that Liuliqiao is 72.6 kilometers away from Huairou Hospital, and it takes 2 hours and 35 minutes to take subway lines 9, 4, 10, 15 and 987. The specific route is as follows:

1. First walk 690 meters from Liuliqiao, get on at Liuliqiao East Station, take Metro Line 9, pass five stops, and get off at National Library Station.

2. Secondly, transfer to the station, walk 70 meters, take Daxing Line of Metro Line 4, pass three stops, get off at Huang Zhuang Station in Haidian, take Metro Line 15 and get off at Wangjing West Station.

3. Finally, take bus No.987, pass 4 stops, get off at Huairou Fishery Station, and walk 870 meters to Huairou Hospital.