Research on multi-dimensional health promotion of rural children in the new era 并列题名：Research on multi-dimensional health promotion of rural children in the new era Research on the social construction of China in the new era research on the development path of Zhongguancun in the new era Research on mechanism of policy innovation diffusion and path optimization of rural governance in the new era Research on China's national image dissemination in the new era Research on issues of police political construction in the new era research on the development of urban-rural integration in the new era