Starting point: Tiantongyuan
End point: National Library
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Tiantongyuan-Anli Road-Yangshan Bridge Turn Right-North Fifth Ring Road-Shangqing Bridge Exit Main Road Turn Left-Qing Xue Road-
Xueyuan Road-Jimen Bridge Turn Right-Lenovo Bridge Turn Right-Xueyuan South Road-Nongke Avenue-Nongke Second Road-National Library.
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Taking the North Fifth Ring Road is not the best route.