The current unilateral downtrend of Ethereum is clear, the direction is defined, and the operation should closely follow the trend; a rebound is an opportunity to short. The 4-hour chart is operating within a downward channel, and after a rebound, the price quickly falls back, showing a wave-like decline. Shorting is the main strategy; the hourly chart is similar, as short-term rebounds are hard to sustain due to the larger downtrend, making it a good opportunity to short instead. As long as the major trend remains unchanged, the high short strategy should be maintained.

Morning operation strategy: direct short at 4250-4290 with a target at 4150.