Since China entered an aging society at the end of the twentieth century, the proportion of the elderly population has been increasing and the aging rate has been accelerating, and it has become one of the countries with the fastest population aging development in the world. The deepening of population aging means the gradual disappearance of the demographic dividend, which will have an important impact on my country's economic development. Since 2008, world economic growth has slowed down. With the tightening of the international market, my ...