Matrixport released a daily chart analysis stating that there is no foolproof rule for Bitcoin investment, but the 21-week moving average is one of the indicators that many market participants pay attention to. From historical data, this moving average level can provide valuable reference background in multiple periods - however, like all single indicators, it also has obvious limitations. For investors who focus on this indicator, when market volatility rises, reevaluating position layout and risk levels will be relatively clearer. The current trend of Bitcoin may still extend in any direction, including the possibility of further decline, but this is not the end of Bitcoin. This situation reminds us: following a few simple and time-tested rules can save investors a lot of stress and repeated entanglement.