US tech stocks, known as the "Seven Sisters," fell across the board before the market opened, with Microsoft down 0.9%, Meta, Amazon, Apple, and Google A down 1%, and Tesla and Nvidia down 2%. Chinese concept stocks also fell across the board before the market opened, with Ctrip, Li Auto, and Tencent Music down 2%, Bilibili, Pinduoduo, Baidu, and Alibaba down 3%, and NIO down 5%.