The Hang Seng index rose 0.3 percent, to 26,063.06, while the China Enterprises Index gained 0.4 percent, to 10,649.90 points.

Investors are bracing for any surprises from Thursday's UK general elections, the European Central Bank's policy meeting and congressional testimony from ex-FBI director James Comey who was fired by President Donald Trump last month.

But sentiment was lifted by trade data showing stronger-than-anticipated China exports and imports for May despite falling commodity prices, suggesting the economy is holding up better than expected.

Most sectors rose, with in index tracking software companies jumping more than 2 percent.