Woofun AI data shows that all three major A-share indices recorded declines during the midday break. The Shanghai Composite Index fell by 22.14%, the Shenzhen Component Index dropped by 3.04%, and the ChiNext index lost 3.72%.

CPO and semiconductor sectors led the downward movement, with Taichen Optoelectronics and Shijia Photonics losing over 10%, Xinyisheng falling more than 8%, and Zhongji Xuchuang declining over 5%. Conversely, glass fiber and glass substrate-related stocks performed strongly, with Zhuolang Intelligence and Wufang Optoelectronics hitting daily limit up levels. Overall, nearly 4,600 stocks across the Shanghai, Shenzhen, and Beijing markets experienced value decreases.