Hyon Song wol, head of the Samjiyon Orchestra of the Democratic People's Republic of Korea (DPRK), arrives in Gangneung, South Korea, Feb. 7, 2018. An art troupe of the DPRK is preparing for a congratulatory performance for the Olympics in Gangneung, a city that will host all the ice events for the Olympics. (Xinhua/Lee Sang-ho)