First mushrooms, now chopsticks: Treasury Secretary Janet Yellen has trekked to China twice in her role as top manager of one of the globe's most important economic relationships. • And both times, Yellen has become something unique for an official in the post: a social media star. Why it matters: Chinese social media is, once again, abuzz with Yellen's latest visit. • At first that may seem trivial, but Yellen's viral moments point to a key feature of the Biden era U.S.-China relationship — economic relations are rocky, but Yellen is well-liked by counterparts and popular among part of China's general public. A key ... (full story)