BTC is in a sideways trend, and altcoins are surging. However, the surge in altcoins is limited. After Christmas, will we see them drop? A coin that rises with low volume will start to drop with a sudden waterfall; a coin that surges with high volume will begin to drop with low volume and a gradual decline; a coin that rises slowly with low volume will reach its previous position again; a coin that surges with high volume may not necessarily reach its peak again after it drops. Just remember this.