1, take bus No.6 from Tsinghua University West Gate, passing through 10 station. Arrive at the National Library Station (or take bus 6 14, 7 17, 320, Te4, Express 105, Express 205, 3 19, 697).
You can also take Metro Line 4 at Yuanmingyuan Station or Peking University Dongmen Station and get off at National Library Station.
If the answer is satisfactory, please adopt it as a satisfactory answer in time ~ ~