There's little major damage to be seen in the Shanghai Composite, which fell 1.4% overnight, but nearly 500 names in China tumbled their daily limit of 10%, and more than 1.2K in Shanghai and Shenzhen slid over 7%.
Shenzhen - more tied to smaller-cap stocks - fared worst, with the Composite Index there down 4.3%.
Some local analysts are dubbing it "Black Monday."
Over the weekend at a financial conference chaired by President Xi Jinping, policymakers talked a tough line on deleveraging and regulation.
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