There is a notable sign that can tell the coming bull market, but can't assure that it will be a long rally. Every time a strong force announces to invest in crypto projects, or a good news which is helpful for the development of blockchain, for example, a crypto-restricted policy is abolished. That must boost the crypto market for a while. Last few weeks, Bitcoin ETF proposal opened the gate for capital for a while. So bitcoin has a big rally, breaking the threshold of $8K.