Introduction to Baguanzhai: Baguanzhai is located 500 meters south of Shangqiu City. Entering the courtyard, you can see an octagonal pavilion with an octagonal stone building in a beautiful shape. The stone building is 3.2 meters high and 0.5 meters wide on each side. On it is "Songzhou Ba Guan Zhai Hui Bao De Ji" written by Yan Zhenqing in his later years.