It was expected to reach 72,000 yesterday, but after the market weakened, I took short-term profits and exited the market, and bought the bottom at the bottom, and continued to take short-term profits and exit. I did not expect that the main force would pull it to 72,000 today, so this is the unpredictability of the market. Of course, I did not take advantage of this wave of pull-up, and even shorted to break even, but it was profitable overall, and it also avoided yesterday's decline. Many people would say that it would have been fine if they had just held on to their longs yesterday. This is a way of thinking that ignores risks. If you had held on to your longs yesterday, if the main force dumped the market and shorted today, you would be miserable. Even if the market is pulled up today, it will still be profitable overall. The core of trading is certainty, not profit margin. Living long is more important than anything else.