The Hang Seng Index gained 0.57 percent, or 149.11 points, to 26,269.88 in opening trade.

The benchmark Shanghai Composite Index added 0.40 percent, or 11.04 points, to open at 2,805.59. The Shenzhen Composite Index, which tracks stocks on China's second exchange, climbed 0.46 percent, or 6.86 points, to open at 1,505.81.