Yearender: U.S.-China subnational ties robust in 2019 despite crosscurrents

Graduate students from China pose for photos on campus after the Columbia University Commencement ceremony in New York, the United States, May 22, 2019. In 2019, while the bilateral relationship between China and the United States is going through some rough patches at the national level, wide-ranging exchanges and cooperation at the subnational level have not been losing steam. (Xinhua/Wang Ying)