BEIJING (AP) — U.S. Treasury Secretary Janet Yellen and Chinese Premier Li Qiang expressed hopes Friday for better communication as Yellen appealed to Beijing not to let frustration over U.S. curbs on technology exports disrupt economic cooperation. BEIJING (AP) — U.S. Treasury Secretary Janet Yellen and Chinese Premier Li Qiang expressed hopes Friday for better communication as Yellen appealed to Beijing not to let frustration over U.S. curbs on technology exports disrupt economic cooperation. Both governments used positive terms to describe Yellen's visit to China's capital, which was aimed at improving strained relations, and stressed the importance of U.S.-China economic...