Let me show you how the event contract slides. During these two minutes, at 24 and 25, both the spot and index are flat, and they do not match the contract at all. I placed my first order at 5u with little change, then my second order at 12u suddenly slid up and then returned to the 5u position. After that, I placed my third short order at 26u. Right after placing the order, my point was 94451.56, but the index showed 94451.66. Logically, it should be a downward trend, but when you open a short position, your position automatically shifts down, and when you open a long position, it automatically shifts up. It's particularly frustrating. Therefore, when there is back-and-forth trading and low trading volume, it is especially easy to be killed by points; the index is not transparent.