The Hang Seng Index gained 70 points, or 0.28 percent, to open at 25,458 points on Monday.

Across the border, the benchmark Shanghai Composite Index rose 0.57 percent to 3,594 while the Shenzhen Component Index was up 0.02 percent at 11,176.

Stocks rose after a trade agreement between the United States and the European Union lifted sentiment and provided clarity in a pivotal week headlined by the US Federal Reserve and the Bank of Japan policy meetings.

Countries are looking to finalise trade deals ahead of an August 1 deadline, with talks between the US and China set for Monday in Stockholm. (Agencies)