Introduction to the Lu family’s old house: Exhibition Hall No. 11 is the Lu family’s old house. The old house has a construction area of 747 square meters. The building structure is a wooden structure, the beam frame is of the bucket type, and the cantilever beams are used in it. The main plane of the building is It is rectangular, and the wall base is built with red sand stones to form a basic surface. It is three rooms wide and three rooms deep.