(CNN) It's going to be another year of Korea summits.

As North Korean leader Kim Jong Un headed back to Pyongyang after a fourth meeting with Chinese President Xi Jinping, his South Korean counterpart, President Moon Jae-in looked forward to an imminent second summit between Kim and US President Donald Trump.

"The second North Korea-United States summit -- to take place soon -- and a reciprocal visit to Seoul by Chairman Kim Jong Un of North Korea will be other turning points that will firmly solidify peace on the Korean Peninsula," Moon said Thursday, at his annual press conference.

"We will not loosen our guard until the promise to denuclearize the Peninsula is kept, and peace is fully institutionalized," added Moon.

In this Jan. 8, 2019, photo provided by the North Korean government, North Korean leader Kim Jong Un, left, and Chinese President Xi Jinping pose for photographs at the Great Hall of the People in Beijing.

Facing increasing pressure at home over a sluggish economy and failure to deliver on certain campaign promises, Moon -- like Trump -- will be keen to get the peace process ball rolling again. His approval rating hit stratospheric levels during the first set of summits last year between himself and Kim, and later between the North Korean and US leaders in Singapore.

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