“After pledging, investing and otherwise guaranteeing the Chinese stock market to the tune of 10% of GDP, and intervening on at least 40 different occasions in the past month ever since China’s stock bubble burst in late June, with the subsequent crash nearly taking the Shanghai Composite red for the year, overnight China officially lost control for the second time, when after a weak start to the Monday trading session, things turned very ugly in the last hour, when the Shanghai Composite plunged by 8.48%, closing nearly at the lows, and tumbling some 345 points for its biggest one-day drop since February 2007 and its second biggest crash in history!”
http://www.zerohedge.com/news/2015-07-27/chinese-stocks-suffer-second-biggest-crash-history-1500-companies-halted-limit-down