Introduction to Zhiyuan: Zhiyuan is the back garden of the Hu family's mansion. The word "Zhiyuan" is chosen to commemorate Hu Zhitian, the father of Hu Xueyan. The courtyard is huge in area and compact in structure, including Yinglian Courtyard, Huijin Hall, Xiqiu Courtyard, Suochun Hall and Yanbi Hall, and the scenery is very charming.