That statement is related the ICO ban from last week. It has nothing to do with the ban exchange news/rumor. Look at the date.

The best official statement we have so far is by BTC China today. You can check it here:
http://www.zerohedge.com/news/2017-09-09/chinas-2nd-biggest-bitcoin-exchange-responds-report-beijing-shutting-all-virtual-exc

Spoiler: they have no idea about what's going on... just like the rest of us.