Market calls are indeed quite frequent, so everyone should operate with caution. In the past two days, looking at BCH's trend, it’s more appropriate to consider a short position from the 610 level. If it rebounds to 620, you can moderately add to your position to lower the average cost. Setting a stop loss around 635 would be safer, while the lower target is around 580. Market conditions change rapidly, so remember that risk management should always come first.