Well, there is no exact answer to this. In one sentence, people believed that when bitcoin began to pump, altcoin was at a stable point, and when bitcoin was at a stable point, altcoin began to pump, and finally, when bitcoin began to dump, altcoin abruptly made a stable point, and when bitcoin entered a dump stable area, altcoin began to dump brutally. And next it repeats itself again and again. Well, it's a theory. But what I believe is a psychological fact is that what traders use in the market. They chose it for their look when the bitcoin price began to fall because altcoins were stable at the time, and traders took advantage of the opportunity to sell their altcoins and invest in bitcoin.Though bitcoin is already in the dump, altcoins began to fall as sellers began to sell in order to buy bitcoin.'s just my speculation, not because I already told you that there is no exact answer. Thank you.