ChainCatcher news, Matrixport released today's chart. Although the market had long anticipated Trump's tariff policy, it still felt surprised. This may be because last week's market focus was primarily on DeepSeek, rather than Trump's policies.However, more importantly, retail investors are under-participating in this market pullback. As tariff uncertainty is expected to persist in the coming days, this uncertainty is affecting the current market adjustment.A simple and effective way to determine whether Bitcoin is still in a bull market is to observe the 21-week moving average, which has historically been an important indicator for observing broad market trends. As long as Bitcoin remains above this level, the bull market still exists. However, if it falls below this level, traders should adopt risk management strategies.