In the past two days, the value of bitcoin dropped for the first time, dropping below the level of $ 10,000 first and then continued its slow decline at a price of around $ 8,800 for more than 30% in three days, leading to a general decline in the copycat currency and a larger decline than the decline in bitcoin Also exaggerated, and some decline even more than 50%, 2018 new year will be bitcoin another September 4, 2017 it? Are you panic?