It is said that Liangxi made tens of millions of dollars overnight by short selling ETH on the U-base. Looking at some incomplete screenshots, he used 200X leverage. I really don't know which big exchange still has 200X leverage, maybe unknown small exchanges still have 200, but small exchanges are all betting with customers, which is equivalent to losing tens of millions of dollars to Liangxi. Some are puzzled. Of course, I have also seen the screenshot of OKX, but those who have done it in OK live trading know that no matter how much leverage you use, there are restrictions on opening positions. For example, for the U-based 100X BTC contract, no matter how much margin you have, you can only open up to 10 positions. Perhaps the cooling off is for special clients who are not restricted The industry is currently in a downturn, and no one is working on contracts anymore. Contracts are an important source of income for exchanges, and there is an urgent need for a few cooling mats as role models for overnight wealth. The more, the better