Matrixport released a chart today stating that there are no absolutely foolproof trading rules when investing in Bitcoin, but many market participants focus on one key indicator: the 21-week moving average. As we've mentioned multiple times in our weekly "Matrix on Target" reports, the 21-week moving average has consistently demonstrated significant reference value over various periods. Investors who pay attention to this indicator are often more likely to reassess their positions and risks during periods of increased volatility. While the current price action may see further declines, it doesn't necessarily indicate the end of Bitcoin's upward trend. It serves as a reminder that instead of being completely swayed by short-term noise, it's better to refer to a few simple, time-tested reference points as relatively stable benchmarks for decision-making.