Haiyuange is located in Yangjia, Wanshouguan Street, southwest corner of Liaocheng Ancient City. It was founded by the famous bibliophile Yang Yizeng in the 20th year of Qing Daoguang (1840). It is one of the four private libraries in Qing Dynasty.
Haiyuan Pavilion is a two-story pavilion with three ridges facing south, with Yangjia Temple at the bottom and Song and Yuan ancient books collection at the top. In the middle of the eaves of the building is the plaque of Haiyuan Pavilion written by Yang Yi in calligraphy.
On the two pillars in the middle, there are couplets of "Food recommends four seasons of new beans, and the book contains ten thousand volumes of small Yuen Long". There are two reading kiosks in front of the pavilion. The fifth courtyard behind the pavilion is the Ming and Qing Library, with five tile houses in the north and three tile houses in the east and west. Yang's book collection began with Yang Yizeng's father, and was widely collected by Yang Yizeng, Yang Shaohe and Yang three generations, with a total of more than 4,000 kinds and more than 220,000 volumes. It is famous for "the wealth collected is the best scenery in the world". 1972 Japanese prime minister tanaka kakuei visits Beijing. Haiyuange Library Building has suffered from war and repeated destruction since 1930. Most of its books are scattered, and only a few of them have been handed over to the National Library and the Shandong Provincial Library. 1 956, Haiyuan Pavilion was listed as the first batch of provincial key cultural relics protection units by Shandong Province. 1992, Liaocheng people rebuilt in the original site according to the original structural style: when completed, celebrities at home and abroad inscribed pictures to congratulate them. There are hundreds of paintings and calligraphy by Li Kuchan, Qigong, Shen Peng, Liu Bingsen, Wang Xuezhong and a large number of books and cultural relics in the museum. On both sides of the gate of Haiyuan Pavilion, a couplet inscribed by Hu Qiaomu, "One person dedicates the interests of ten thousand people, and four generations of books are immortal", is hung conspicuously.