Many government has said it will tighten virtual currency management, causing Bitcoin prices to fall below 9,000$.
Bitcoin prices traded on Coinmarketcap at 8:40 am on Feb. 2 were around 8,779.76$, losing more than 14 percent of yesterday's value.
Compared to the peak set in December 2017, Bitcoin lost more than 60% of its value.

It is because Bitcoin price can be manipulated and it is very volatile but we should not consider Bitcoin as dead the price is not dropping dramatically, it is very slow but also gaining slow just one good news and bitcoin is back on the right track again.