The Xu Guangqi Memorial Hall (å¾Âå Âå¯纪念é¦Â) is a memorial and museum for the 17th-century Chinese scholar Xu Guangqi. It is located besides the tomb of Xu Guangqi in Guangqi Park (å Âå¯堬åÂÂ), Xujiahui, Xuhui District, Shanghai, China. Formerly Nandan Park (Ã¥ÂÂ丹堬åÂÂ), the park was renamed in 1983 for the 350th anniversary of Xu Guangqi's death.