It's not easy. Every time I use 10% of my position, I get tortured by break-even losses. Although I didn't catch the best move this time, I finally gained 150 points. To be honest, I really wanted to close all my positions at 3170, but in the end, I held back and only reduced half of my position.

Since it has already dropped 150 points, there might be a small rebound. If it can rebound to around 3250, I will short again.
Then, I will wait for it to fall to 3000 and close all positions, then use the rebound from 3000 to short again.
This is a complex strategy.

For beginners or followers, a short-term short position can wait directly for 3000, and a long-term short position with break-even losses should just wait for 2200.