[A-Share Market Close: STAR 50 Index Surges Then Falls by 1.85%, AI Application Sector Rises] According to Daily Economic News, on August 28, the innovation indices collectively surged before retreating, with earlier gains exceeding 1%. By the close, the Shanghai Composite Index fell 0.11%, the Shenzhen Component Index dropped 0.68%, the ChiNext Index declined 1.41%, the STAR Composite Index slid 1.57%, and the STAR 50 Index surged then fell by 1.85%. The total trading volume of the Shanghai and Shenzhen markets reached ¥2.1 trillion, a decrease of ¥242 billion compared to the previous trading day. On the market front, hotspots were relatively scattered, with over 3,000 stocks rising across the board. From a sector perspective, the agriculture sector remained actively volatile, with Wanxiang Denong achieving six boards in nine days and Xinjiang Sai shares hitting two consecutive boards. The chemical sector experienced a notable rally, with JinNiu Chemical, Fluorine Tech, and Youfu shares hitting limit-up. The PTFE concept continued its strong momentum, with Haohua Technology and Water shares achieving two consecutive boards. The cybersecurity concept saw a turbulent rise, with Qilin Xin'an hitting a 20cm limit-up, while Zhong'an Technology and TianRongXin also hit limit-up.