There are many tricks to trading, and those who trade often use the Martingale strategy to make the profit curve look good. They will add margin when they incur losses and keep adding money to floating losses, running away with profits as soon as the market reverses. Since one-sided markets are rare, this strategy has a high win rate, and the profit curve is very smooth, which aligns with human psychological acceptance. However, there will always come a time when a one-sided market takes away all previous profits. No matter how the Martingale strategy is modified, such as limiting the number of additional positions or the amount of additional investment, it is useless; it's just a difference between blowing up in one go or a few times.