U.S. Treasury Secretary Janet Yellen delivered a firm message to China on overinvestment in clean energy goods during her visit to Guangzhou and Beijing. She faces the tough decision of recommending increased U.S. tariffs on Chinese electric vehicles and solar panels to protect American producers and workers or pursuing dialogue for alternative solutions. The trip garnered positive attention from Chinese officials and social media, but pushback from state media and officials challenges Yellen's assertion of China's excess manufacturing capacity flooding global markets.