There is no definite answer to the duration of the bull market, because it is affected by many factors, such as market sentiment, policy supervision, technological innovation, supply and demand, etc. However, we can refer to historical data and analyze the cyclical changes of cryptocurrencies to make a rough prediction of future trends.
The bull-bear cycle of cryptocurrencies is about a four-year cycle, which coincides with the halving cycle of Bitcoin. For example, 2013, 2017, and 2021 were all halving years for Bitcoin, and also bull years for cryptocurrencies. In these years, the prices of Bitcoin and other cryptocurrencies have experienced explosive growth, creating historical highs. In the year after the halving, such as 2014, 2018, and 2022, the prices of cryptocurrencies have experienced a sharp correction and entered a bear market. In these years, the prices of Bitcoin and other cryptocurrencies have fallen sharply, breaking through historical lows.