Matrixport released a chart today stating that the 21-week moving average is one of our core indicators for observing the shift between bullish and bearish trends in Bitcoin. Looking back at multiple market cycles, it often provides effective follow-up signals during uptrends, while also alerting investors to risks during sharp pullbacks, helping them avoid significant downward swings. When Bitcoin broke below this level in the fourth quarter, we warned that the correction might deepen further. Although a rebound occurred in late December, it quickly encountered resistance near the 21-week moving average and failed to recover. Currently, Bitcoin has not yet firmly established itself above the moving average, indicating that the market as a whole is still in a correction phase. Short-term tactical rebounds are still possible, but there are currently no clear signals sufficient to support an upward move.