Bitcoin's follow-up trading strategy and specific levels: (1) The 0.618 Fibonacci retracement level, near point E around 68,000, is the optimal entry point for shorting $BTC in the next phase. Target price for the drop and take-profit point: around 55,000. (2) When it drops to around 55,000, there might be a rebound to around 60,000, followed by a continued decline to around 45,000. The drop won't happen all at once or in a straight line—expect twists and turns along the way.