Wow that looks ridiculous.
Take this with a grain of salt. I hear that the ICO ban and Exchange closure rumours have been used as a bit of a price manipulation tool. The ICO ban appears to be legitimate but the Chinese exchange closures appear to be rumour only.
Bter and Bittrex market prices show a huge discrepancy to reflect investor confidence.
But as I was saying, the exchange closures could be rumour only to manipulate prices while those in the know buy in. I would not be surprised that while all that is happening, miners are getting in(also as investors) while those with weak hands make an exit. This is one explanation for the graph and current market landscape.... And that's my theory only.
Don't take what I say as truth...Do your own research. I just like to speculate.