
When President Biden met President Xi Jinping on Wednesday on the edges of Silicon Valley, there was a subtle but noticeable shift in the power dynamic between two countries that have spent most of the past few years denouncing, undercutting and imposing sanctions on each other. For the first time in years, a Chinese leader desperately needed a few things from the United States. Mr. Xi’s list at the summit started with a revival of American financial investments in China and a break in the technology export controls that have,...