The Hang Seng Index rose 13.36 points or 0.05 percent to open at 24,746.81 on Tuesday.

Mainland stocks also opened slightly higher, with the benchmark Shanghai Composite Index up 0.15 percent at 3,588.81 and the Shenzhen Component Index 0.34 percent higher at 11,078.58.

Meanwhile, the mainland's services activity expanded at its fastest pace in 14 months in July, fuelled by stronger demand, including a rise in new export orders, a private-sector survey showed.

The S&P Global China General Services PMI rose to 52.6 in July from 50.6 the previous month, marking the fastest pace since May last year. The 50-mark separates expansion from contraction. (Xinhua/Reuters)