[afternoon comment: Prev index fell 0.71% AI concept stocks are active against the trend] the market fluctuated in early trading, and the three major indexes all fell slightly. On the market, the concept stock of brain-computer interface continues to soar, with Aipeng Medical, innovative Medical Care and New Intelligence Cognition all connected. AI concept stocks are active against the trend, leading the way in the direction of CPO and arithmetic. Hongbo shares hit a record high in 4 consecutive boards, Jinbaize 20CM4 Lianban, Zhongji Xuchuang rose more than 10%, games and media stocks rebounded, Yaoji Technology rose by the daily limit, and Tianzhou Culture rose more than 10%. High-speed rail concept stock pulled up, Jinxi axles rose by the limit, and CRRC once went up by the limit. In terms of decline, photovoltaic and pharmaceutical stocks fell into adjustment, Beida Pharmaceutical fell by more than 10%, and Junda shares fell by more than 5%. On the whole, stocks fell more than rose less, with more than 3500 stocks falling in the two cities. Today's turnover on the Shanghai and Shenzhen stock markets is 548.4 billion, a decrease of 53 billion compared with the previous trading day. Plate, brain-computer interface, Nvidia, CPO, high-speed rail and other plates led the rise, perovskite batteries, CRO, new crown medicine, TOPCON batteries and other plates led the decline. By the close of trading in the morning, the Prev index was down 0.71%, the Shenzhen index was down 0.77%, and the gem index was down 0.68%. In terms of northward funds, there was a net outflow of 1.953 billion from Shanghai Stock Connect in early trading and a net inflow of 2.018 billion from Shenzhen Stock Exchange in morning trading.