Take subway line 4 from Xidan, get off at Zhongguancun, take the northwest exit, cross the road and walk west 150 meters, take bus No.302 or No.26 to Beijing Seismological Bureau, and walk back 400 meters to Haidian Book City. Or, after getting out of the subway, go west along the Fourth Ring Road and you will arrive at Haidian Bridge. There is only one stop, 10 minutes. There is Zhongguancun Book Building opposite the Book City Street, and everything is still complete.