Cai Hongwen checks his skis at Beidahu in Jilin City, northeast China's Jilin Province, Jan. 26, 2020. Cai Hongwen is a 65-year-old sports enthusiast living in Changchun of Jilin Province. In order to improve physical fitness, he has kept on practising skiing, windsurfing, horse riding and other sports for years. For Cai, doing sports is a good way to achieve self-challenging and self-breakthrough. (Xinhua/Xu Chang)
