罗 牛 山：公司名下土地未发生重大变化，公司房地产业务是基于存量土地的滚动开发

Group 1 - The company has 960 acres of residential and commercial land as reported in the 2017 annual report [2] - As of September 24, the company stated that there have been no significant changes to the land it owns [2] - The company's real estate business is based on the rolling development of existing land [2]