Bitcoin's recent decline indeed shows no mercy. After a brief pause around 91,300 yesterday, it directly broke below, and the 90k psychological level couldn't hold, dropping to around 87,800 at one point.

Structurally, the next line of defense is at 87,200—that is, the recent rebound's 0.618 Fibonacci level. If this level also breaks, only the 0.8 level at 84,000 will support it. Going further down is the 75,000 range, which has little buffer left.

The most urgent task now is to monitor these key points. Whether 87,200 can hold determines the short-term direction. If it slips below, the market may accelerate toward the 75,000 region. Market conditions are changing rapidly during this period, so real-time tracking is necessary.