热门中概股美股盘前涨跌不一，蔚来跌超3%

Group 1 - The core viewpoint of the article highlights the mixed performance of popular Chinese concept stocks in the US pre-market trading, with some stocks experiencing gains while others faced declines [1] Group 2 - NetEase saw an increase of over 2% [1] - Alibaba, iQIYI, and Weibo each rose by more than 1% [1] - NIO experienced a decline of over 3%, while XPeng Motors fell by more than 2% [1] - Li Auto and Futu Holdings both dropped by over 1% [1]