In the Men's 1500m event at the 2018 Winter Olympics, his first competition at the Olympic games, he finished in fourth place behind Canada's Charles Hamelin, Belgium's Jens Almey, and the United States' Aaron Tran. Both Jung and China's Han Tianyu, who placed fifth, advanced to the semifinal despite the top three quota due to the disqualification of Italy's Yuri Confortola, who collided with Tianyu during the race. The judges awarded a semifinal berth to Jung after the judges ruled that Jung was impeded by the collision. In the first semifinal of the event, Jung finished fifth behind Russia's Semion Elistratov, Hamelin, Korea's Seo Yira and Latvia's Roberto Puķītis. The top two placers, Elistratov and Hamelin qualified for the gold medal race and the third and fourth placers, Yira and Puķītis, qualified for the ranking final, while Jung failed to advance.