European and American institutions are gradually resuming work, and liquidity in the crypto market has clearly improved. Bitcoin surged directly to a high of 90,930 in the early hours yesterday, then pulled back slightly, currently oscillating around the 90,000 level; Ethereum's performance has been even more aggressive, breaking through the 3,050 resistance that has been sideways for half a month, reaching a high of 3,150 at one point, now stabilizing in the 3,100-3,150 range.

Why is there a rebound? It's not hard to understand—during the Christmas and New Year holidays, the liquidity benefits from the Federal Reserve hadn't fully transmitted to the market, that's one reason. Secondly, Bitcoin and Ethereum have been sideways at low levels for too long over the past two months, and market panic has mostly been digested. When institutions come back and buy a little, prices jump accordingly.

From a technical perspective, both assets are facing short-term correction pressures. Key support levels for Bitcoin are at 89,000 and 88,500, with a significant resistance at 91,000; Ethereum needs to be closely watched to see if it can hold above 3,050-3,000, with clear upward resistance at 3,150, and a strong resistance zone at 3,200-3,250.

Particularly note: today is Saturday, and weekend volatility is usually limited, most likely following a correction and recovery pattern. Another important point—this is just a rebound, not a reversal. Even if Ethereum finally breaks through the strong resistance and reaches 3,200 or even 3,300, it will ultimately fall back again. Don't be fooled by the short-term rally.