1. Too much money was used, and there was no buffer fund, so it was broken when there was a big fluctuation. My friend was cut by 6.5438+0.8 million yen overnight, which is proof! 2. The general trend is wrong, there is no stop loss, it depends on the final position. There is no stop loss for big political events. For example: 9. 1 1 incident, Kennedy assassination and other suggestions: generally do margin trading, with at most 10% of the funds to make orders, and large funds generally use 2%, 3% and 5% to make orders.