ACT insists on finding reasons. Recently, Binance has changed its position limit twice in a row, and the positions that can be maintained with the same amount have been decreasing. For example, previously, a margin of 1 million U could open a position of 5 million U, but now maintaining a position of 5 million U requires you to add 1 million U, otherwise it will automatically close the position. Market makers may have done too much work in ACT and have no extra funds. In the end, they cut themselves, leading to a chain of liquidation, which in turn affects the liquidity of many imitations. The market capital is seriously insufficient, and market makers cannot survive. Sigh