Hong Kong stocks fell on Tuesday, with the Hang Seng Index closing down 170 points, or 0.7%, at 23,041 points; the Tech Index dropped 1.5%. Mainland Chinese stocks also gave back early gains, closing at a 14-month low, with the ChiNext Index plunging 3.41% and the STAR 50 Index plummeting 4.8% to its lowest since March, as AI-related stocks continued to be sold off. China's central bank announced on Monday that it has decided to establish a liquidity swap facility to provide emergency liquidity to non-bank financial institutions facing large-scale redemptions.