Chinese exchanges are trading at $390USD +. Is this normal due to the Yuan or is this because they may be privy to the conference?

https://coinmarketcap.com/currencies/ethereum/#markets

This may be a typical question and a simple thing where Chinese and South Korean Exchanges just trade at higher prices than USA based. For instance Poloniex is $349, and GDAX $357 whereas OKcoin is $390.

edit: spelling.