Don't short when bearish; it's suitable to follow the direction of the market funds when market sentiment is stirred up. Currently, large funds are in a trend of pumping and dumping. Don't expect prices to pump too high. In terms of percentage, at least a week or so for dumping, go long on dips, and when shorting, it's best to observe the funds' dumping time. You can take short positions with a stop loss and take profits.