The current market data for ETH shows that only a breakthrough and hold above 3255-3270 presents long positions opportunities. Without a breakthrough, it can be short on a rebound, with a stop loss at 3273.

Operational Ideas
3180-3215 short, 3250 add position, stop loss 3260.3055 watch for a break below to see 2935
2935 long positions, 2910 add position, stop loss 2900 (profit should be locked)
Pay attention to the levels 2880-2720-2530 below; entering long positions at the level where it stops falling and holds above is relatively safe.
(2855 long positions, 2805 add positions, stop loss 2800. take profit 2890-2930-3015)
The defense level 2557-2637 can enter the spot market.

If it can hold above 3270
Short in batches from 3350 to 3394, stop loss at 3415. Take profit at 3275.
3450-3480 short positions, 3490 stop loss, profit depends on the situation $ETH