Judging from the contract positions, it is not caused by shorting and increasing positions in the contract, but by selling the spot market, which took away the contract players in one go. Therefore, you must have a stop loss when doing contracts, otherwise you will be killed by this sudden spot market crash. I don't know which big guy may want to get some cash again, so he comes here to sell the coins in his hands. There are still many coins of unknown origin out there. In recent years, many hackers have stolen a lot of coins, and there are also coins confiscated by governments of various countries in the crackdown on illegal black funds. They didn't remember it and just sold it without thinking. This kind of nonsensical market crash reflects the importance of stop loss, because in this market, you don't know which will come first, tomorrow or an accident, so saving your life is the most important thing. In addition, this wave of market crash can also show which coins are resistant to beatings. Resistant coins are good things. I arranged DOGS spot a few days ago, and today I arranged UMA and AAVE spot. Don't ask why, it's because they are resistant to beatings. The market and most coins are falling, and it's extraordinary that they can withstand the damage.