The Federal Reserve's interest rate hikes and cuts directly impact the liquidity of the crypto market, U.S. stock market, and even global markets, determining the direction of financial cycles. It is no exaggeration to say that rate hikes often lead to bear markets and tighter funding, while rate cuts typically bring bull markets and looser liquidity, making their impact significant. This article provides a detailed analysis of the principles, processes, and economic effects of the Federal Reserve's interest rate adjustments.