"China stocks in sharpest fall since 2007," state-run Xinhua news agency reported.
The benchmark Shanghai Composite Index dropping 8.49 per cent to close at 3209.91 points. The smaller Shenzhen Component Index fell 7.83 per cent ending at 10,970.29 points.
The CSI 300 also declined to end at 3,271.89, down 8.85 per cent or 317.65 points.
The ChiNext Index, tracking China's Nasdaq-style board of growth enterprises, lost 8.08 per cent to end at 2,152.61 points. Nearly 2,200 shares tumbled by the daily limit of 10 per cent, Xinhua report said.
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Fears about the sputtering Chinese economy have spread like wildfire in global stocks, leading to a vicious round of risk aversion selling, the Post report said.
Yesterday's decision by the Chinese government to permit its USD 547 billion pension fund, the biggest in the world, to be invested in the stock market despite the June 12 market crash wiping out about USD 4 trillion capital has not helped.
"The official PMI to be released on September 1 will be closely watched by the market," said ANZ in a note to clients.
"Activities remain sluggish while the risk of deflation has not abated with PPI falling for 41 consecutive months. We expect a RRR cut in Q3 followed by an interest rate cut".
Investors rushed to dump shares amid fears that hard landing risks in China are rising after a slew of policy incentives failed to bolster economic performance, the Post reported.