It's all because financial institutions on Wall Street lack financial supervision. At the beginning, the real estate and other investment industries in the United States were very hot, which led to overheated investment. In fact, these are all economic bubbles. At that time, Americans had stable jobs, which were beyond consumption. Applying for a loan can use the house as collateral, because after all, the real estate business is very hot, and even if the lender is unable to repay the loan, the real estate can be auctioned. However, it didn't take long for the bubble of American real estate industry to burst suddenly. At this time, even if the bank auctions the house, it can't make up for the loopholes in the loan. As a result, bad debts accumulate, and the final result is bankruptcy. Three of Wall Street's top five investment banks (that is, LZ said) suddenly closed down, and the other two became government-controlled banks. As Wall Street is the financial center of the world, all countries in the world hold its fund bonds to a greater or lesser extent, which eventually triggered a global financial tsunami, and then spread to the real economy, leading to the bankruptcy of major enterprises, especially export-oriented enterprises, leading to the layoffs of major enterprises and a large increase in unemployment rate, resulting in the current situation. It is not to let the economy decline, but to stimulate domestic demand. In order to achieve an 8% GDP growth rate, China invested 4 trillion yuan to increase infrastructure, and finally achieved an 8% growth rate.

The above is my personal opinion, for reference only!