The following characteristics may be observed in BTC's movement over the next 12 hours:

1. **Short-term rebound testing**

- **MACD histogram turns positive (319.66)**, indicating a weakening of downward momentum, and a short-term rebound may occur. If the price can stabilize around 88,800, it may attempt to test resistance in the range of 90,300-92,500.

- **KDJ's J value (83.88) is overbought**, and the rebound may be limited, so caution is needed for a pullback after a high.

2. **Key support and resistance**

- **Support level**: 86,050 (24h low) is an important psychological level; if it falls below, it may accelerate the decline towards around 85,500.

- **Resistance level**: 92,540 (24h high) is a strong short-term resistance, and breaking through is challenging.

3. **High probability of fluctuation range**

- Combining high trading volume (6.525 billion USDT) and MACD divergence signals, the price is likely to fluctuate in the 86,000-92,500 range, attempting to form a bottom or confirm the trend direction.

**Conclusion**: The next 12 hours lean towards a fluctuating repair, first slightly rebounding to the 90,000-91,000 area, then facing pressure and retreating, ultimately closing in the 88,000-89,500 range. If it breaks below the 86,000 support, it may quickly drop to around 84,000. It is advised to pay attention to EMA moving averages and changes in trading volume, and to be alert for sudden news impacts.