In ice skating Sung participated in the 2013–14 ISU Speed Skating World Cup – Men's 500 metres and 2013–14 ISU Speed Skating World Cup – Men's 1000 metres and has represented Chinese Taipei at the 2014 Winter Olympics in both events in Sochi. In December 2013 he won a bronze medal at the 1000 metres at the 2013 Winter Universiade speed skating.