Shares of Chinese short-video platform Kuaishou fell more than 13 per cent to HK$45.96 by midday in Hong Kong on Thursday, a day after reporting strong sales growth, as analysts warned that its core advertising and live-streaming businesses could face mounting pressure this year.The sharp decline reflected investor concerns over a cautious growth outlook for the Beijing-based firm, compounded by its heavy spending on artificial intelligence, according to Zhang Xueru, an analyst at investment...