4 trillion is mainly not to invest in the stock market, but to invest in infrastructure. A dose of fierce medicine, the side effects are too great, there is no way to make money. The central government invested 4 trillion yuan, and the local government invested an estimated 40 trillion yuan. Resulting in a serious overcapacity. It cannot be said that the current economic situation is the result of 4 trillion seeds planted a few years ago. As for the stock market, it bottomed out at 10 in 2008, and raised 4 trillion yuan around September, which means that the market doubled in August 2009, and then fell in these five years.