As for the daily average volatility, USD/JPY is quite large, mostly at 100-200. It is common to exceed 200, but it is hard to say if it is specific to 250. If there is no data, 250 should be considered relatively high, but it is best to control the short position within 300 points during the safety period!
However, since the landlord asked me, I think the landlord didn't set a stop loss when trading at ordinary times! ? If it is, it is very dangerous. For the foreign exchange of this margin trading system, we must set a stop loss to minimize the risk! That's what I'm talking about. Finally, I hope the landlord can make a lot of money, hehe!