Bearish momentum dominates, with Bitcoin dropping over 4000 points in a single day and breaking through key support levels, while Ethereum also breaks down and moves downward. The current rebound strength is weak, and the $82,660 level is more likely a technical correction rather than a trend reversal. The overall structure has shifted to a bearish arrangement. Key resistance is focused on the $83,500-$84,000 range, which was previously support and is now under moving average pressure. If the price cannot strongly break through this area, it is highly likely to test the $81,000 low again, and a break below could target the psychological level of $80,000. In terms of strategy, maintain a short position on rebounds, with Ethereum linked to resistance in the $2750-$2780 range. All rebounds are opportunities to short on rallies; closely monitor resistance signals and set strict stop-losses to manage risk.