On August 31, at the market close, all three major U.S. stock indices experienced a collective downturn. The Nasdaq Composite Index fell by 0.12%, settling at 26,370.89 points. The S&P 500 Index dropped by 0.33%, ending at 7,686.14 points. Meanwhile, the Dow Jones Industrial Average declined by 0.7%, closing at 53,185.9 points. Among large-cap tech stocks, most saw declines, with Amazon and Google both plummeting more than 2%. Microsoft's shares dipped by over 1%, while Meta and Apple experienced only slight decreases. In contrast, Tesla's stock surged by more than 5%, and Nvidia's shares rose by over 1%. Popular Chinese concept stocks also generally trended downward, with Alibaba's stock falling more than 4%. NIO's shares dropped by over 3%, while Bilibili and Weibo both saw declines exceeding 2%. Pinduoduo, Baidu, JD.com, Xpeng Motors, and Li Auto also experienced declines of more than 1%.