热门中概股美股盘前普跌，理想汽车跌超3%

Group 1 - The core viewpoint is that popular Chinese concept stocks experienced a decline in pre-market trading on August 1, with significant drops observed across various companies [1] Group 2 - Bilibili, Tencent Music, and Li Auto each fell over 3% [1] - Alibaba dropped over 2%, while Pinduoduo, Baidu, iQIYI, NIO, and Xpeng Motors all saw declines exceeding 1% [1] - JD.com experienced a smaller decline of 0.79% [1]