Investors treat the call between the American and Chinese leaders as a potential risk event rather than a breakthrough moment

The Hang Seng Index edged up less than 0.1 per cent to 26,557.41 as of 10.55am local time, after dropping as much as 0.5 per cent. The Hang Seng Tech Index added 0.9 per cent. On the mainland, the Shanghai Composite Index lost 0.4 per cent while the CSI 300 Index was little changed.

Online-game provider NetEase slumped 1.8 per cent to HK$236.20, and insurance firm AIA Group fell 1.6 per cent to HK$72. Pharmaceutical firm Wuxi AppTech dropped 1.7 per cent to HK$109.90, while blind box toymaker Pop Mart International lost 1.1 per cent to HK$264.40.

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