With this order, I won't breach the event contract. Counting down 10 seconds, it was still around 1939; in the last 2 seconds, it was around 1937.3; then in the last second, it dropped to 1936.85, saving me from this order. A few seconds later, it immediately shot back up. Sometimes it's really just a coincidence. In 10 minutes, the price fluctuations are usually small, and when facing sideways fluctuations, it’s quite probable that the opening and closing prices are very close. If you go long, you will often encounter this. Binance can make a fortune with an expected payout advantage of 80%, and there's no need to manipulate the candlestick with large funds to take out this small amount.