My 942 short positions have all been closed. Looks like BTC's main force wants to make a small rebound. Later, when it rises above 90k, there’s still a chance to short—wait for my signal. It’s also possible that I’ve judged it wrong, but I’ve made a decent profit and I’m satisfied. I just don’t want to play ultra-short-term trades anymore, it’s too exhausting, though it’s doable.