Hello, as long as you abide by fair trading rules, do not manipulate the market, and do not exploit system loopholes, we do not have any restrictions on order holding time.
Reminder: Trading (including opening and closing positions) is not allowed two hours before the close of Friday and two hours after the opening of Monday. Two hours before the close of Friday, the system will automatically force closing of open positions and pending orders. You will be responsible for any losses caused by forced closing of positions by the system. Thank you.