From USD2000 dropped down to USD1400 for only 2 days?
Anyone knows what is happened?

Get used to it when you are into this market because those kind of drops are quite common and this market is unpredictable so its just normal to see these movements.
If you are just new into this market then you would really be surely shocked but once you do get yourself used to it then you would definitely be seeing this as casual
volatility this is why you should really be careful on dealing with crypto investment.Always take caution on when to enter and on when to get out.
You wouldnt know on what would be the next movement of it.