In the past two days, it went from 100u to 241u, and the difficulties involved need not be elaborated. The summary is just one thing: event contracts really should not be approached recklessly. Once you do, all techniques will be thrown out the window; all that will be in your mind is just one word: gamble, only thinking about winning it all back next time. I was almost at the point where these two days of effort would have been in vain. From now on, I must constantly remind myself to carefully analyze the candlestick chart before placing an order, to avoid opening positions recklessly, and to reduce the risk of losses.