North Korea's International Olympic Committee representative said Saturday there is still work left to be done for the country's participation in next month's Winter Olympic Games in South Korea.

"There were things which went well and did not go well," Chang Ung said following his discussions of North Korea's plan to join the games with IOC President Thomas Bach and other officials in Switzerland.

Chang also told reporters at Beijing's international airport that "the IOC is likely to consider" South Korea's proposal to form a joint women's ice hockey team and the size of North Korea's delegation to be sent to Pyeongchang will be decided by its national Olympic committee.

The sole North Korean IOC member made the comments before flying back to Pyongyang after visiting Lausanne, where the IOC is headquartered.

(North Korea's IOC member Chang Ung at Beijing international airport Saturday.)

The IOC is scheduled to convene a four-party meeting on Jan. 20 in the Swiss city, involving a delegation from the Pyeongchang 2018 Organizing Committee and high-ranking officials from the two Koreas, to decide on the participation of North Korean athletes, given that all the deadlines for registration have already passed.

Before the meeting, South Korea has proposed working-level talks with North Korea on Monday at the truce village of Panmunjeom.

During its first formal talks earlier this week with South Korea in more than two years, North Korea agreed to send a delegation, including athletes and cheerleaders, to the Feb. 9-25 games.

All those developments have been taking place since North Korean leader Kim Jong Un struck a surprisingly conciliatory note on relations with South Korea in his New Year's address and expressed Pyongyang's willingness to join the Olympics.