I tried to short a little bit in front of $TRADOOR, the observation warehouse I shorted didn't make much money, but let me share some analysis.

The historical high point range + round numbers will attract some people to bet on a breakout.

This is one of the positions that the 'dog' operators like to manipulate.

There have been signs of volatility in the past; once the contract positions change, seeing a rebound means you have to decisively or gradually close the short position, especially with the short fee, or else you'll be played by the 'dog' operators.