The money in people's hands is not the money they want to spend, but the money they have in the bank, so the interest rate of national debt is generally higher than that of banks, which allows people to lend money to the country. After receiving the money, the country will go to Gai Lou to build a bridge, in short, spend it. Transfer payments are mostly welfare expenditures, such as social insurance benefits, pensions, pensions, unemployment benefits, relief funds and various subsidies. Usually when the depression comes, the total income is. This can enhance purchasing power, raise the level of effective demand, and restrain or alleviate depression.