The process of making contracts with friends around me is always enjoyable, but the outcome is often tragic. Let me give you an example of myself recently. Actually, I don't do contracts because I received a short message notification of a stock explosion. I have already forgotten about this matter. The process is roughly like this: in the second half of last year, I didn't know where to start, so I transferred some SOL into my sub account (which can be understood as Ant Warehouse). I opened a 5-fold leveraged coin based long position around $130, and of course, I also experienced the highest SOL of $290, with an estimated return of more than ten times. However, the ending is well-known. Last year, I had a classmate who had just entered the market and also played contracts. At the beginning, he made a lot of money, but after the position was liquidated, he went to work again