Fell before dawn... Who can explain why the margin is forcibly liquidated when there are still 20u left? How is the maintenance margin balance determined?

The system originally expected the liquidation price to be 106780, but it was liquidated at a price of 106878 when it only reached 106480...

It's really confusing to incur losses like this.

I hope this serves as a lesson for newcomers not to trust the system's estimated liquidation price, and I also ask the experts to provide an explanation on how to determine a more accurate liquidation price?