Caijiazhai is located in Liuke Village, Boao Town, downstream of Wanquan River, Qionghai City. It sits east to west, with a flat rectangular plane. It is composed of four brick-concrete structures and courtyard-style buildings. It is the house of several brothers of Caijia, Caijia Senzhai, Caijia Yuzhai, Caijia Jinzhai, Caijia Hongzhai. The attractions are free.