The governments are concerned and therefor try to get hold of the gray space around cryptocurrency (sorry for my english, I hope you guys know what I try to say). So they try to create rules for the space and meanwhile might ban it or make it illegal:
http://www.businessinsider.com/r-chinas-regulators-preparing-new-rules-for-digital-coin-offerings-caixin-2017-8
I also found this post which sounds interesting. China is potentially suspending all ICOs in the future. People's Bank of China is considering a blanket ban on ICO's because of potential "large risks" for consumers.
https://cointelegraph.com/news/china-ico-suspension-warning-echoes-regulator-treatment-of-exchanges
This all isn't a big surprise as Cryptocurrencies are starting to become really popular. And with this popularity lots of scams are attracted too I guess. So it might be useful to try to regulate it (this digital wild wild west, or rather east maybe...).
Either way, China's ETH, NEO, had a big bearish run and recovered a bit but is still pretty down (-10%).
These news for sure impacted the NEO price but I don't think that even blanket ban in China would bring Neo down.
To many people believe in it already and might see this now as a buying opportunity.