12.19BTC Afternoon Trend: After hitting a bottom in the morning, how high can this rebound go?

This morning, BTC dropped to 84408.6 and then immediately "sprouted from the ground," and by the afternoon, it broke through the 87800 resistance level. The bulls are really aggressive!
First, highlight the support / resistance levels:
1. Support: 87000 is the current "lifeline" — it was tested several times during the rebound without breaking. Holding this level means the rally can continue. If it breaks, then the 86000 bottom line will be the next focus; breaking this could mean the rebound is over.
2. Resistance: First target 88500 (today's high), breaking through that could reach 89000. If it can't push past this, it will fluctuate within the range.
How will the afternoon trend develop?
If it stays above 87800 with volume, the bulls can continue to push towards 88500-89000, and a breakout could lead to a stronger rally.
If it stalls and pulls back within 88000-88500, it will hover between 87000-88000, waiting for new signals.
If 87000 cannot hold, it may fall back to 86500-86000, and the rebound could pause temporarily.
Here's a clear plan:
Long positions: Lightly follow above 87000, with a stop loss below 86800. First target 88500; if broken, add positions aiming for 89000-89500.
Short positions: Only try lightly if 88500 clearly cannot hold, with a stop loss above 88800, targeting 87500-86800.