Provide an idea for shorting coins such as trb: open an order one minute before the fee is charged, and stop the loss at the original price, which is equivalent to the stop loss space being the fee. Reason: The turning point of a currency from strong to weak is usually the time of charging rate. The sign is that it cannot rebound and refers to the price before charging rate. The advantage is that the stop loss is very fixed and can usually catch the relative highest point. This type of currency is too risky and it is not recommended to participate. It is for learning reference only.