On Monday, Bitcoin's price急跌至87500, hitting the lower Bollinger Band support on the daily level, forming a long lower shadow pattern. RSI is close to the oversold area (around 34) but hasn't broken down, and the MACD green bars are shrinking, indicating a weakening of bearish strength. Support levels focus on 87500-88000, while resistance above is at 91000.

Operation suggestions

Bitcoin retraces to the 88000-88500 range, target 90000, with an upside at 91500. Altcoin retraces to the 3050-3080 range, target 3150, with an upside at 3220.