A blistering rally in Chinese technology shares accelerated on Wednesday, spurred by renewed bets on AI.

The Hang Seng Tech Index, which tracks the largest tech firms listed in Hong Kong, rose as much as 3.9% to hit its highest level in nearly four years. Search engine operator Baidu led gains with a 19% jump but multiple tech giants came along for the ride, including Alibaba, Semiconductor Manufacturing International, and JD.com.