It can be filled in the following directions: in recent years, labor resources have gradually declined and the degree of aging has deepened. China is facing enormous challenges such as unbalanced population structure, disappearance of demographic dividend, rising dependency ratio of the elderly, and increasing burden of medical care and old-age security. The shortage of labor force will also bring many influences to politics, economy, culture and society, and at the same time, it will produce problems that need to be solved urgently by the government, such as housing, old-age care and medical care.