Did China's Xi visit North Korea because an emboldened Kim Jong Un wants "to confront the U.S."?

Did China's Xi visit North Korea because an emboldened Kim Jong Un wants "to confront the U.S."? CBS News North Korea, China claim wins from Xi visit, but limits remain Reuters Behind the Pageantry in Pyongyang With Xi and Kim The New York Times China re‑centers North Korea ties as nuclear silence reshapes balance NPR Was Xi’s stance on North Korea military ties also a message for US, Russia? South China Morning Post