A boy fishes for trouts on a frozen river during the Sancheoneo Ice Festival in Hwacheon, South Korea, Jan. 5, 2019. As one of the biggest winter events in South Korea, the annual three-week festival draws people to the frozen Hwacheon river, where organizers drill fishing holes in the ice and release trouts into the river during the festival period. This year the festival lasts from Jan. 5 to Jan. 27. (Xinhua/Wang Jingqiang)