China and the U.S. have agreed on making joints efforts to solve specific problems "in a practical way," Chinese Commerce Ministry spokesperson Gao Feng said at the weekly press conference. Gao said both countries have resumed "normal communications" in the fields of economy and trade. The spokesperson said Chinese Vice Premier Liu He had spoken to U.S. trade representative Katherine Tai and Treasury Secretary Janet Yellen in the past week, with each conversation lasting about 50 minutes.