Introduction to the Ruan Hoa Binh Old House: Exhibition hall No. 10 is the Ruan Hoa Binh Old House. It is a mid-Qing building with a width of 18 meters and a depth of about 16 meters. It covers an area of ​​275 square meters and has a two-story structure, consisting of a front hall and a patio. It consists of four parts: , wing room and back hall.