In other news, South Korean President Moon Jae-in is in Cambodia, the last stop on a one-week tour of three countries in Southeast Asia.
And he says his administration's New Southern Policy, if combined with Cambodia's development projects, can result in a productive partnership.
In a bilateral summit Friday with his Cambodian counterpart, the leaders exchanged ways to boost their bilateral cooperation on multiple levels.
The two sides have also said yes to seven agreements including cooperation in the sectors of commerce, investment, agriculture, finance, tourism and education.
They also agreed on five memorandums of understanding -- on energy, business, construction, research and diplomacy.
The South Korean leader's tour of the three ASEAN countries will wrap late Saturday.