[Selected midday news on September 29] 1. As of midday closing, the Shanghai Stock Exchange Index rose 0.08%, the Shenzhen Stock Exchange Component Index rose 0.41%, and the ChiNext Index rose 0.34%. 2. Hong Kong stocks closed at noon, with the Hang Seng Index down 0.63% and the Hang Seng Technology Index down 1.37%. 3. The Ministry of Agriculture and Rural Affairs introduced at a press conference that the supply and demand situation for live pigs continues to improve, and prices have fluctuated but have generally recovered. 4. The CEOs of Nvidia and Anthropic will attend Trump’s luncheon to discuss the risks of artificial intelligence. 5. OpenAI canceled its original plan to release a new model, GPT-6.1 Astra, in October after discovering security risks during testing.