T+0 is a securities (or futures) trading system. On the day when securities (or futures) are traded, the trading system that handles the settlement and delivery procedures of securities (or futures) and prices is called T+0 trading. Generally speaking, the securities (or futures) bought that day can be sold that day. T+0 trading was once carried out in China stock market, because it was too speculative. In order to ensure the stability of the securities market, the Shanghai Stock Exchange and Shenzhen Stock Exchange in China now adopt the trading mode of "T+ 1" for stock and fund trading. That is, what you bought on the same day will not be sold until the next trading day. At the same time, the funds are still "T+0", that is, the funds returned on the same day can be used immediately. However, Shanghai Futures Exchange implements the trading mode of "T+0" for steel futures trading. At present, China's stock market implements T+ 1 clearing system, and the futures market implements T+0.