Smart contracts are not only powerful AI intelligence, but also very scary tools for accumulating wealth. Smart contracts have harmed many people! Although Bitcoin has made many billionaires, it has also plunged many into the abyss. It's like a gun; it can protect oneself but also kill others. How much money you have in your account can be monitored by the backend of the door, first killing those close to the liquidation price, then those far from the liquidation price. The extreme case is when the long wick candle is 0 for the liquidation price, which means pulling the network cable to play with data, abbreviated as getting liquidated, and the operation will definitely be as fast as lightning.