Hong Kong stocks traded sideways on Thursday, with technology stocks retreating on growing anxiety that a global boom in artificial intelligence could turn into a bubble. The Hang Seng Index edged up 0.1 per cent to 25,498.13 at the close. The Hang Seng Tech Index dropped 0.7 per cent. On the mainland, the CSI 300 Index slid 0.6 per cent and the Shanghai Composite Index added 0.2 per cent. Xiaomi, the Chinese smartphone and electric vehicle maker, tumbled 2.5 per cent to HK$40.20 and Pop Mart Internatio ...