$BTC From the four-hour level perspective, the price surged to 91253 and faced resistance near the upper Bollinger Band at 91200, leading to a pullback. Currently, it is oscillating between the upper and middle bands, with the Bollinger Bands not showing a significant opening, and bullish momentum has noticeably weakened. The upper band pressure continues to be effective, and since the price has not stabilized at the high after the surge, there is a need for a pullback. If it subsequently breaks below the middle band support, bearish momentum may gradually be released, likely approaching the lower Bollinger Band. Short-term bearish signals are gradually emerging, and the one-hour Bollinger Band trend is flattening. The price is running above the middle band but is close to the upper band, facing resistance. The distance between the upper and lower bands is narrowing, indicating an oscillating pattern, and the risk of breaking out after oscillation is increasing. The short-term rebound has not prompted the Bollinger Bands to open upwards, and the hourly line has repeatedly tested the upper band without success. If there is no strength to break through the upper band pressure, it is likely to test the middle band support downwards. Once the middle band is lost, the bears may dominate the market and push towards the lower band, with an increased probability of bearishness after short-term oscillation.