The Hang Seng Index rose 1.3 per cent to 24,109.48 at 9.55am local time. The Hang Seng Tech Index jumped 2.3 per cent. On the mainland, the CSI 300 Index and the Shanghai Composite Index both added 0.3 per cent.
Delivery platform Meituan rose 4.5 per cent to HK$148.10 and short video platform firm Kuaishou Technology advanced 4.3 per cent to HK$61.65.
Other large tech stocks also performed well: JD.com added 4.1 per cent to HK$134 and Alibaba Group Holding rose 2.1 per cent to HK$119.10. Alibaba owns the Post.
On the flip side, Geely Automobile Holdings dropped 0.9 per cent to HK$17.78 and electric-vehicle maker BYD fell 0.7 per cent to HK$400.40 amid an industry-wide price war.
Top trade negotiators from the US and China were scheduled to engage in talks in London on Monday, raising hopes that tariff tensions could ease as both nations seek to bolster their economies.