After the rebound of Bitcoin at 84400, it has been consolidating in a narrow range around the 88000 line. The 4-hour structure shows a converging triangle, operating between the mid and upper bands of the Bollinger Bands. The KDJ is neutral to bullish, but the J value is turning down. The MACD green bars are narrowing, indicating weakened short-term rebound momentum. Resistance is at 89500 (upper Bollinger Band + previous minor high), and support is at 87300 (mid band) and 85100 (lower band). Caution is needed for a fall that breaks through the mid band to test previous lows. The short-term trend will continue to fluctuate, with daytime trading around the mid to upper Bollinger Bands for short positions; at night, focus on the triangle breakout signal, and follow the trend after it breaks.

Sunday focus:

Around 84500-85500, resistance: around 83500, target: around 86500 - 87500 - 88500,

Around 89500-90500, resistance: around 92500, target: around 88500 - 87500 - 86000

Around 2780-2830, resistance: around 2680, target: around 2900-3000,

Around 3050-3100, resistance: around 3200, target: around 2950-2850

No matter how the market changes, one must adhere to one's principles, maintaining rationality and calmness. Deeply understand the characteristics, risks, and return mechanisms of investment products, and do not let short-term market fluctuations affect emotions.