The Shanghai Composite Index opened lower today at 3,925.32 points, down 11.20 points, or 0.28%, as investors closely watch the summit between US President Donald Trump and Chinese President Xi Jinping, which is due to take place today. Earlier, US Treasury Secretary Scott Bessent said on Wednesday, September 23, that the United States and China had agreed to extend their trade truce by another two months, to January 10, 2027, from a previous expiry date of November 10, 2026. Investors are watching this summit closely for signals on trade, semiconductors, artificial intelligence and supply chains, especially AI, where strategic competition between the world's two largest economies is intensifying.