There are four iron laws of Bitcoin that have not been exempted so far:
First, the output of Bitcoin is halved every four years, which is a fixed mechanism in its design.
Second, about half a year after each halving, the market usually ushered in a big bull market.
Third, the bull market generally ends about a year and a half after the halving, and then enters a plunge phase, which is also the best time to escape the top.
Fourth, the plunge usually lasts about a year, with a drop of 80%, which is the best time to buy the bottom.
When Bitcoin rises too much in a bull market, funds will naturally flow to altcoins. As the trading volume of altcoins increases, their prices will also rise (unless Bitcoin itself does not experience a bull market).