Lang poem group was founded in 2001, is Chinas real estate enterprises, is Chinas leading green real estate development and operation of science and technology enterprise, lang poem group long-term differentiation development strategy implementation of green technology, main business for the residential real estate development, and is actively developing green endowment, green building technology, green financial services such as new business, after years of accumulation, The first green hotel in China, The Exchange Hotel came into being.