纳斯达克中国金龙指数收跌1.82%，热门中概股多数下跌

Group 1 - The Nasdaq China Golden Dragon Index fell by 1.82% on July 31 [1] - Most popular Chinese concept stocks experienced declines, with NIO and New Oriental dropping over 4% [1] - Li Auto decreased by over 3%, while Pinduoduo and Xpeng Motors fell by over 2% [1] - Alibaba and JD.com also saw declines of over 1% [1]