BTCchina released a notify that it will close all the trade on Sept. 30th. Then BTC price on this platform was down less than CNY18000 hurriedly.
Then the crash is because of this news because when I also checked, I realised that what is happening is massive and the FUD is getting real but at the same time, its still not something that would shake someone like me as this is going to be the worst of all events that have happened in the life time of bitcoin.