Currently, BTC is in a key oscillation range of $85,000-87,000 USD‌, and multi-period technical indicators show that shorts are dominant, but the Oversold signal needs to be vigilant for a short-term Rebound. In operation, priority should be given to following the resistance zone for Short opportunities, and if the support is effective, then layout buy low Rebound, with strict risk control to deal with potential change in market trend risk.