Aging of the population and the construction of the elderly service system Origin of Chinese economics and the construction of independent knowledge system Introduction to the construction of public education service system Innovation of higher education and the construction of lts management system the study on the construction of Chinese governance system Internet of everything and the construction of enterprise ecosystem 并列题名：Introduction to the construction of public education service system Research on the development of public art in the construction of public cultural service system Knowledge classification and the reconstruction of China's modern academic system Introduction to the construction of socialist market system