Hello, the trading hours of the trading day of Hong Kong Stock Connect include pre-opening time and continuous trading time. Among them, during the period before the opening of the stock exchange from 9: 00 to 9: 30, Hong Kong Stock Connect investors can only enter the limit order at 9:00-9: 15, and cannot modify the order, but can withdraw the order before reporting. In addition, investors should also pay attention to the continuous trading hours of the stock exchange (i.e. 9: 30-12: 00; 13: 00- 16: 00) is longer than the Shanghai A-share market, and investors can choose11:30-12: 00 and15: 00-/kloc.