The Former Residence of Gan Xi, known as the Grand Courtyard of the Gan Clan, is located on Zhongshan South Road, Nanjing, Jiangsu Province, China. It lies next to Nan Bu Ting (南捕厅), the South station of the former Nanjing Police Station. It was built in the reign of the Jiaqing Emperor (1796–1820), the Qing dynasty, and its first owner was Gan Xi's father, Gan Fu. Originally known as "Fraternity Hall" (友恭堂), it now serves as the Nanjing Folk Museum.