[Afternoon Commentary: The Science and Technology Innovation 50 Index rose nearly 4% in half a day, and the chip industry chain collectively strengthened] On September 18th, the Shanghai Stock Exchange Index fluctuated and rose in early trading, and the ChiNext Index and the Shenzhen Component Index opened higher and then rose again. The half-day turnover of the Shanghai and Shenzhen stock markets was 1.32 trillion, which was 74.3 billion higher than the previous trading day. More than 4,500 stocks across the market rose. On the market, hot spots are rotating rapidly, and the chip industry chain is collectively strengthening. Photoresist Huaruan Technology has 2 consecutive boards, advanced packaging Huatian Technology has hit the daily limit, memory chip Chengbang Technology, and computing power chip Suiyuan Technology have risen by nearly 10% to hit record highs; large consumer Guofang Group, Guoguang Chain, and Shaanxi Tourism have hit daily limits; robotics Corson Technology has had 3 boards in 5 days; sub-new stocks have been active repeatedly, Xihua Technology has 4 consecutive boards, Ma Kuang Co., Ltd., and Haian Group have hit daily limits. On the downside, the automobile sector was weak, with Zotye Motors, Jiangling Motors, etc. falling one after another. As of the close, the Shanghai Stock Exchange Index rose 1.04%, the Shenzhen Component Index rose 1.52%, and the ChiNext Index rose 2.11%.