Midday: The Science and Technology Innovation Index has risen more than 3% in the morning, with semiconductor, PCB, and other computing hardware stocks collectively rising.

In the morning session, the three major indexes of A-shares showed mixed movements. As of midday, the Shanghai Composite Index rose by 0.15%, the Shenzhen Component Index rose by 0.52%, the ChiNext Index fell by 0.2%, and the CSI 50 Index fell by 0.76%. The total turnover of the entire market was 1.7108 trillion yuan, a decrease of 29.4 billion yuan from the previous day, with over 2500 individual stocks rising. In terms of sector themes, the electronic chemicals, PET copper foils, semiconductor, PCB concepts, AI smartphones, CPO, optical fiber concepts, duty-free shops, gaming, and coal mining and processing sectors performed well. On the other hand, the liquor, food, defense equipment, pork, tourism and hotel, diversified financial, and photovoltaic equipment sectors experienced declines. The continuous rise in helium prices drove the strength of the electronic chemicals and industrial gases sectors, with Jin Hong Gas and Guanggang Gas leading the way. NVIDIA's market value returning to 5 trillion yuan boosted sentiment in the AI industry chain, with most of the PCB industry chain witnessing increases, led by copper foil companies such as Defu Technology and Tongguan Copper Foil with increases of over 10%. Moore Threads turned losses into profits in the first quarter, and the domestic computing power industry chain performed well, with Moore Threads, North Huachuang, and Huahaicheng Technology leading the gains. Additionally, there was rotation in sectors like optical fibers, CPO, and duty-free shops throughout the trading session. Conversely, Guizhou Maotai's first quarter report falling short of market expectations led to a decline in the liquor sector, with Guizhou Maotai falling nearly 4% during the session. The food and pork sectors also performed poorly, with Hei Zhima hitting the limit down and Tianbang Food and Muyuan stocks falling one after another.