When there is selling pressure, you can appropriately short, but when it reaches the point of speculation, you should take profits; otherwise, you will experience a pullback. Moreover, if you encounter unusual fund movements, you might get trapped. So remember, remember to set stop losses for short positions against the market, and take reasonable profits.
When funds enter the market and selling pressure is low, do not trade short-term, as it is easy to lose chips due to FOMO.