I dont think thats the reason for such. China banned ICOs since last year, but it never had any effect, except the price downing for few weeks and then taking a turn upwards. If that was the reason, then the price wouldnt have reached the $19,000 price rate which it did last year 2017. Lets just say its a normal thing that happens in market and due to the correction, so very soon the price will go up again.