South Korean President Moon Jae-in sat next to the powerful sister of the North's leader Kim Jong Un at a concert in Seoul by musicians from Pyongyang, as conservative protesters burned the North's national flag outside on Sunday.
The show was the final set-piece element of the North Korean delegation's landmark visit, the diplomatic highlight of the Olympics-driven rapprochement between the two halves of the peninsula.
They have shared kimchi and soju, sat in the same box at the Olympics opening ceremony and cheered a unified women's ice hockey team.
Kim yesterday invited Moon to a summit in the North, an offer extended by his sister and special envoy Kim Yo Jong, who made history as the first member of the North's ruling dynasty to visit the South since the Korean War.
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