Today (January 22) BTC Key Information Overview: Currently around $89,800, intra-day oscillation is leaning bullish, with $90,000 as the dividing line between bulls and bears. Key support below is $89,000-$88,000, resistance above is $90,500-$91,500. The complete summary is as follows:

1. Key Support and Resistance Levels (from near to far)

- Support Levels:
1. $89,000 (intraday low/psychological threshold), if broken, further decline
2. $88,300-$88,000 (yesterday’s high-volume area/previous rally point), strong support
3. $87,800-$87,500 (yesterday’s low/Bollinger lower band), if broken, look toward $87,000
- Resistance Levels:
1. $90,300-$90,500 (intraday rebound high/short-term moving average resistance), break above for further upside
2. $90,700-$91,000 (yesterday’s high/psychological threshold), key resistance
3. $91,500-$92,000 (20-day EMA/trend dividing line), stabilize above for strength

2. Entry and Stop-Loss Suggestions (short-term, position ≤30%)

- Rebound Short (priority):
- Entry: $90,300-$90,500 (gradual position building)
- Stop-loss: $91,100 (above yesterday’s high)
- Targets: $89,500 → $89,000 → $88,300
- Cautious Low-Point Long:
- Entry: $88,800-$88,500 (after stabilization)
- Stop-loss: $87,700 (below yesterday’s low)
- Targets: $89,500 → $90,000 → $90,500
- Risk Control Points: Strictly avoid chasing highs or selling lows, cut losses immediately upon breakdown, do not hold against the trend

3. Three Trend Reversal Signals (adjust strategy upon trigger)

1. Volume breakout above $90,500 and stabilize, 4-hour RSI >55, MACD crossing above zero line, shifting to oscillation with bullish bias, can add light long positions
2. Volume breakdown below $88,000 and fail to recover, forming a downward channel on 4-hour chart, bearish continuation, observe or add short on rebound
3. Macro sudden events (such as US bond yield fluctuations, ETF fund flow shifts), rapid decline/rise, immediately reduce positions or exit

4. Short-term Outlook

- Intraday likely to oscillate between $89,000 and $90,500, with $90,000 as a key level
- Weak rebound momentum suggests continued weakness, watch support at $88,000; breaking $90,500 may target $91,000+
- Market sentiment remains cautious, Fear & Greed Index at 31, mainly funds observing the market