I dont know why the bitcoin price down so fast who know some big event please give me the reasons.
The only reason is because Segwit 2x was canceled and this caused a mass hysteria sell off. This was the only reason the price was inflated the last few days as well and this drop off is perfectly normal. Look for bitcoin to stablize in a few weeks.
nope, this answer is too shallow.
yes, Segwit2x is cancelled. That is the short answer.
But what was Segwit2x about?
About hyping BTC, making people jump on the bandwagon?
And now they leave and everything is as usual?
Just another fork...but what are these forks about?