Ethereum daily chart rebounds along the 5-day moving average, overnight touching the upper boundary of the daily central zone near 3400 and encountering resistance before pulling back. The 30-minute timeframe is expected to establish a new 30-minute central zone within the 3280-3380 range today. Watch for resistance in the 3380-3400 area above, and support in the 3300-3280 area below. The trading strategy remains range-bound: 1. Near 3380-3400, consider short positions on rallies with a stop loss at 3420 and take profit around 3300; 2. Near 3300-3280, consider long positions on dips with a stop loss at 3260 and take profit around 3360-3380.