In the early session, a short position was established on Bitcoin within the 89500 to 90000 range, simultaneously shorting Ethereum at 3050 to 3100. The brilliance of the strategy was perfectly validated by the afternoon's movement — the Bitcoin short position has already locked in approximately 2000 points of profit from entry to now. This price level choice coincidentally hit the key resistance rebound and pullback point, demonstrating excellent timing. The entire operation showcases precise judgment of short-term fluctuations in BTC and ETH.