Short track speed skater Lim Hyo-jun brought the host country its first gold medal at the Winter Olympics in Pyeongchang.
Semen Elistratov took the bronze competing under the banner of the Olympics Athletes from Russian Federation, meaning there was no medal for defending champion Charles Hamelin, who incurred a penalty.
Earlier on Saturday, South Korea's Choi Minjeong set an Olympic record in the women's 500m with a 42.870-second finish in her heat to qualify for the quarter-finals taking place on Tuesday.
Afterwards, the new champion paid tribute to Korean-born naturalised Russian Viktor Ahn, the sport's most decorated Olympian, who was ruled ineligible after Russia was banned for doping.
"When I heard the news, [of Ahn's exclusion] it was really terrible, it would be an honour to race against him".
"I thank Victor for this win", said the 25-year-old.
"I dedicate this medal to all guys that have been excluded from these games in such a hard and unfair way", Elistratov said.
Korea had two shots at the target but Hwang Dae-heon crashed out of the final, causing a collective groan from the homex supporters.
Hamelin, who had become the oldest male athlete to win an Olympic gold medal in an individual short track event aged 29 years and 302 days at the Sochi Games, was disqualified for impeding.
The Chinese women also set an Olympic record in the 3000m relay with 4:05.315. He was on the four-man team that won that event at home four years ago in Sochi.