The Shanghai Composite added 0.37% to close at 3,876 while the Shenzhen Component climbed 1.16% to 13,215 on Wednesday, with the latter reaching 3,5-year highs as artificial intelligence and new energy shares extended their rally. Sentiment was also supported by optimism over US-China trade talks and a potential TikTok deal, with President Donald Trump and President Xi Jinping set to speak on Friday to finalize terms. Meanwhile, Beijing recently unveiled fresh measures to stimulate services consumption, pledging greater openness in sectors such as internet and culture while encouraging more international sports events. Among top gainers, East Money Information rose 1.8%, Foxconn Industrial 2.3%, Contemporary Amperex 6.7%, Zhejiang Sanhua 6.8% and Wolong Electric 8.7%.