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The Hang Seng Index fell 0.29 percent, or 64.16 points, to 21,768.52 by the break.
And the benchmark Shanghai Composite Index slipped 0.52 percent, or 16.06 points, to 3,102.02, while the Shenzhen Composite Index, which tracks stocks on China's second exchange, edged down 0.05 percent, or 0.93 points, to 1,983.17.