Major indexes suffered their largest one-day drop since 2007, shattering three weeks of relative calm in China's volatile stock markets since Beijing unleashed a barrage of support measures to arrest a slump that had started in mid-June 2015
The CSI300 index .CSI300 of the largest listed companies in Shanghai and Shenzhen plunged 8.6% , to 3,818.73 points, while the Shanghai Composite Index .SSEC lost 8.5 %, to 3,725.56 points
Stocks fell across the board on Monday, with 2,247 companies falling, leaving only 77 gainers.
More than 1,500 shares listed in Shanghai and Shenzhen dived by their 10% daily limit
All traded index futures contracts also fell by their maximum 10 percent limit