Research on the development models and paths of Chinas county-level economy Research on the development mode and path of innovative city Research on the development and regulation of platform economy Research on the development model of Chinas renewable energy industry Study on the development model of coastal county economy Research on the development strategy of Chinas modern service industry Research on the development model of entrepreneurial college Research on the development of Chinas economic geography Research on the development of college sports economy Research on the development trends of Chinas exhibition industry