36Kr learned that the three major A-share indices collectively fell during the midday break, with the Shanghai Composite Index down 0.73%, the Shenzhen Component Index down 0.31%, and the ChiNext Index down 0.67%; AI applications weakened, with Chinese online platforms dropping over 5%, and Zhangyue Technology falling over 4%; the precious metals sector led the decline, with XC-TECH down over 5%, Hunan Gold and CHIFENG GOLD down over 3%; the optical module and semiconductor sectors strengthened, with DSBJ hitting the daily limit, Accelink rising over 8%, Han's Laser up over 6%, and TFC increasing nearly 4%