From the current structure, this period of Bitcoin belongs to a technical repair after a sharp drop. On the four-hour level, the previous low around 81000 has formed a clear lower shadow, indicating that buying support has started to appear below, but the overall price is still running below the middle track, and the moving average system is still in a bearish arrangement. The rebound can only be defined as a pullback in the downtrend rather than a trend reversal; on the one-hour chart, the rebound volume is gradually decreasing, with the 84000 line repeatedly ranging, and the momentum is not keeping up. If it cannot stabilize with increased volume, there remains a risk of a second retest. The overall rhythm is to give positions during the rebound and wait for the direction.\n Short Bitcoin at 84500-85000, target 82000 breaking to 80000. \n Short Ethereum at 2730-2760, target 2650 breaking to 2550.