Ethereum daily chart rebounded along the 5-day moving average, overnight touching the upper boundary of the daily central zone around 3400 and encountering resistance to fall back. The 30-minute timeframe is expected to establish a new 30-minute central zone within the 3280-3380 range during the day. Watch for resistance in the 3380-3400 area above, and support in the 3300-3280 area below. The operational approach remains oscillatory: 1. Near the 3380-3400 area, consider shorting on rallies with a stop loss at 3420 and take profit near 3300. 2. Near the 3300-3280 area, consider going long on dips with a stop loss at 3260 and take profit in the 3360-3380 range.