When global central banks adjust interest rates, if interest rates are lowered, more funds may flow into the crypto market in search of higher returns, driving up prices. Conversely, if interest rates are raised, funds may flow back to traditional financial markets, leading to a decrease in the demand for cryptocurrencies and price drops. Market expectations also play a role. If investors expect central banks to take actions that are favorable or unfavorable to the economy, it can influence their perception of the risk - return profile of cryptocurrencies, thus affecting the market's overall sentiment and price.