On June 28th, the stock market experienced a rollercoaster ride with the Shanghai Composite Index showing relative strength. Against the trend, stocks in the decelerator and robotics sectors saw significant gains, with companies like Youde Precision, Zhongma Transmission, Changling Hydraulic, and Liancheng Precision all hitting the daily limit. Coal and power stocks showed strength in the morning session, with Shen-Nan Electric A, Ningbo Energy, Zhengzhou Coal Power, and Shaanxi Black Cat all hitting the limit up. The AI sector saw mixed performance, with gaming and other application-related stocks rebounding in the afternoon. Xunyou Technology and Palmfun Technology both hit the limit up and rose by over 10%. However, stocks related to computing power and data saw sharp declines, with companies like Inspur Information, Yunsai Zhilian, and Ziguang Guowei all hitting the limit down. Overall, most stocks experienced losses, with over 2,700 individual stocks falling in the two markets. The total turnover of the Shanghai and Shenzhen stock markets was 888.2 billion yuan, an increase of 47.1 billion yuan from the previous trading day. In terms of sectors, the decelerator, coal, power, and agricultural machinery sectors performed well, while the CPO, data elements, ChatGPT, and domestic software sectors saw the largest declines. By the close, the Shanghai Composite Index fell by 0.00%, the Shenzhen Component Index fell by 0.47%, and the ChiNext Index fell by 0.44%.