Introduction to Yiyuan: Yiyuan was built in the late Qing Dynasty from 1874 to 1882, covering an area of ​​9 acres. The top of the stone library door is inlaid with the word "Yiyuan" carved in bricks and gilded. On the wall on one side of the gate is inlaid a stone carving of "Cultural Relics Protection Unit of Jiangsu Province: Yiyuan"; on the other side of the wall is "Introduction to Yiyuan": purchased by Gu Wenbin of Ningshao Daotai in Zhejiang in the 13th year of Tongzhi in the Qing Dynasty (1874) It was built on the former site of "Fuyuan" by Wu Kuan, Minister of the Ming Dynasty. It takes the meaning of "good nature and longevity", hence the name "Yiyuan".