Introduction to the Imperial Library: There is an Imperial Library outside the west gate of Zhongdaozhuang. It was specially built by Chen Zhuanglu, the third son of Chen Tingjing, to show off the great kindness of the Chen family. According to the newly compiled "Jincheng Jinshi Zhi", when the building was built, there were nearly 20 poems written by Emperor Kangxi personally written by Chen Tingjing and Chen Zhuang, four couplets and other inscriptions. It was elegant and spectacular. At present, only the Kangxi imperial plaque "Wuting Mountain Village" and the couplet "The trees are thick and shady in spring, and the yellow flowers are fragrant at night in autumn" remain in the building. The plaques and couplets are all original objects.