220 thousand square meters. According to the website information of Yinchuan Jianfa Group Co., Ltd., the developer of Yinchuan Cai Yue, the total construction area is 220,000 square meters. Yinchuan Cai Yue will build the international south gate of the diamond exchange, become the window of international jewelry cultural transactions, and become the innovator and leader of the upgrading of diamond, gold and jewelry industrial bases in China.