China's blue-chip CSI300 Index dropped 0.4% to a one-year low, while the tech-focused STAR50 index fell 1.8%. (EPA Images pic)SHANGHAI: China's blue-chip shares edged lower on Friday and were headed for a 12th consecutive weekly loss, as a global selloff in AI stocks weighed on sentiment, though Hong Kong-listed internet companies bucked the trend.

China's blue-chip CSI300 Index dropped 0.4% to a one-year low by the lunch break, while the Shanghai Composite Index lost 0.3%. Hong Kong's benchmark Hang Seng was up 1.6%.

The CSI300 Index was down 0.9% for the week and 7.6% for the month, and on track for its biggest monthly loss since July. Over the last 12 weeks, it has lost 14%, the longest losing streak on record.