“Yu-Qing-Tang” (Yuqing Mansion) has two halls on first floor, namely the front hall and the back hall. For the purpose of promoting ventilation and natural lighting, there is a patio in between the two halls. The back hall opens directly into the patio. The front hall was a living room, with movable doors that could be removed flexibly according to actual needs. These doors and hangings were once gilded, showing the wealth of the Zheng's family at that time.