From the 4-hour structure perspective, Bitcoin faced clear resistance after surging to touch the 90,400 level, then closed with a long upper shadow bearish candle, indicating concentrated selling pressure at high levels. The stage-wise top formation is evident, with a double top pattern already emerging.

Currently, the price has effectively broken below the short-term upward trendline, while the upper band of the Bollinger Bands is forming obvious resistance. The middle band support is being repeatedly tested, with its effectiveness significantly weakened. During the pullback, volume failed to expand accordingly, and the rebound height remains limited. The price has repeatedly stalled below previous highs, indicating that bullish momentum is exhausted, and the technical structure fully meets the trigger conditions for a bearish correction.

Trading idea (mainly short on rebounds)

BTC (Bitcoin)
Enter short positions in batches within the 88,900–89,500 range
Targets sequentially at 87,000 / 86,000
If the rebound lacks volume, hold the short positions

ETH (Ethereum)
Look for opportunities to short within the 2,990–3,020 range
Focus on targets at 2,850 / 2,750 below
Do not consider a trend-long position until it effectively stabilizes above 3,050