Introduction to the former residence: The Ganxi Residence, also known as the Ganxi Residence or the Gan Family Courtyard, was built during the Jiaqing period of the Qing Dynasty. The former residence is not an Hui-style building, nor is it a complete Soviet-style building, but is closely related to Gaochun, Liuhe and other buildings in Nanjing. The same as the ground, it has Nanjing's own architectural style.