BNB reached the lowest price in the waterfall at 212 dollars, and the liquidation position of bnb worth 200 million US dollars on the chain was 217 dollars.
As a result, liquidation was not triggered. This time, crv is different from before. crv fluctuates too violently and link has a protection mechanism. Now bnb has stopped between 212-217 for a long time, which has enough time to trigger liquidation.
Although the Binance core team controlled this part of BNB in the previous proposal, the chain continuously initiated liquidation when it reached 217 but the liquidation failed, resulting in the liquidation position actually being in vain.