@xuesanguo@miharuya@CarlZha It doesn't matter how Liu Cong died, the key is that Cao Cao obtained the actual control of Jingzhou through Liu Cong at the least cost. When Liu Cong lost his right to speak in Jingzhou, he lost value in the process of Sun Quan and Cao Cao's competition for Jingzhou.
When the system has enough collateral to repurchase, the holder can choose to burn $XUS at the market price to exchange it for collateral of the same value. This is why $XUS suddenly increased
Need to explain a situation
When there is a debt in the system, after depositing collateral into the collateral pool to help the system reduce the debt, the same value of $XUS will be minted to the depositor