This involves the relationship between accumulation and consumption in the redistribution of national economy. Accumulation is mainly used for reserves and future investments. The more you accumulate, the more you can promote economic growth through investment and capital construction, but it will affect the consumption level. The more you spend, the less you spend on reserves and investment, which will affect economic growth and further affect the consumption capacity in the far future. So there is a proper ratio between accumulation and consumption. Some countries in the world are countries with high accumulation rate, such as China, Brazil and India, so their economic growth rate is high, but their social security and social welfare are relatively backward. Some countries are countries with low accumulation rate, such as many high welfare countries in the European Union, but their economic growth is relatively slow.

Foreign exchange reserves belong to a special kind of accumulation. In extreme cases, these foreign currencies can also be directly distributed to ordinary people to improve their lives, but few countries (and of course a few countries) do this because it is not the normal way of government behavior. Even some economists in our country suggested that no one in China would pay $ 100, but it was taken as a joke. Our country will not send foreign exchange directly to the people. These foreign currencies are used for other purposes, such as building AIIB, providing export subsidies for enterprises, foreign economic assistance, etc., and the effect is better than direct foreign exchange.