North Korean leader Kim Jong Un and South Korean President Moon Jae-in met Tuesday afternoon for the first round of talks in what is expected to be a three-day summit.

The talks lasted from 1545 to 1745 local time at the headquarters of the Workers’ Party of Korea (WPK): the first time that the leaders of the two Koreas have met at that venue.

Moon wrote “the heart of the nation is united in peace and prosperity” in a visitors book before the talks began.

In opening remarks, Kim Jong Un praised the South Korean President’s efforts to improve relations