The Beijing-Washington schism could be widening. The U.S. won't revive high-level economic exchanges with China abandoned during the Trump administration, as it extends its tough line toward Beijing. While Treasury Secretary Janet Yellen and the heads of other departments are in touch with their Chinese opposites, there will be no return to the formal talks of the Obama years, people familiar said. Washington plans or has recently announced new action on Hong Kong, Xinjiang and an Asian digital trade deal that excludes China. All have drawn angry reactions from Chinese officials.