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The Hang Seng Index fell 1.36 percent, or 423.94 points, to end at 30,844.72.
The benchmark Shanghai Composite Index lost 0.99 percent, or 32.66 points, to 3,259.41 and the Shenzhen Composite Index, which tracks stocks on China's second exchange, added 0.16 percent, or 2.86 points, to 1,811.78.