The sister of North Korea's leader Kim Jong Un, who is on a historic visit to the South for the Winter Olympics, shook hands with Seoul's President Moon Jae-in at the opening ceremony Friday.

Kim Yo Jong, the first member of the North's ruling dynasty to visit the South since the end of the Korean War in 1953, met Moon when he arrived for the opening ceremony in a pentagonal arena in Pyeongchang.

Kim Jong Un's sister joined athletes and officials from around the world at the South's Winter Olympics Friday, the first member of Pyongyang's ruling dynasty to set foot in its rival since the Korean War.

Kim Yo Jong was part of a diplomatic delegation led by ceremonial head of state Kim Yong Nam -- the highest-level North Korean official ever to go to the South -- as the Games trigger a diplomatic rapprochement between the rivals.

Both Washington and Tokyo are regularly threatened by Pyongyang, but Japanese Prime Minister Shinzo Abe did shake hands and exchange words with Kim, Seoul's spokesman said.