If the profits of the currencies you hold decline, don't be afraid. If you chased the currencies you hold at a high price, you can cover your position if the decline reaches more than 20%. However, if the altcoins you hold only fall back a few points or 10 points, you don't need to pay attention to them. However, if the altcoins you hold have risen several times when you chased them, then you have to pay attention to these currencies. These currencies have been the ones to deal with recently. Even if the subsequent market comes up, these currencies will find it difficult to go up, and they will all do a wash-out action.