After speculation on the visit, China and North Korea both have finally confirmed that Kim had travelled to Beijing and met Xi during an 'unofficial visit' from Sunday to Wednesday.
China said that North Korea's leader Kim Jong Un pledged his commitment to denuclearization and to meet US officials, after his meeting with President Xi Jinping, who promised China would uphold friendship with Kim Jong Un's led North Korea.
Reacting to the visit, White House said on Wednesday the situation with North Korea was moving in the right direction after North Korean leader Kim Jong Un met with Chinese President Xi Jinping in Beijing.
North Korea might be trying to come out of its position as so-called "isolated" country and expected to be holding summits.
North and South Korea will hold their first summit in more than a decade on April 27, South Korean government officials who held high-level talks with their North Korean counterparts on Thursday said.
The two Koreas had agreed earlier this month to hold such a summit at the border truce village of Panmunjom when South Korean President Moon Jae-in sent a delegation to Pyongyang to meet with North Korean leader Kim Jong Un.
Japan has also sounded out the North Korean government about a bilateral summit, and Pyongyang has discussed the possibility of a leaders' meeting with Japan, Japan's Asahi newspaper said on Thursday.
The government of Kim Jong Un has informed leaders of North Korea's ruling Korean Workers Party of the possibility of a summit with Japan, the newspaper said, citing an unidentified North Korean source and briefing papers.
(With inputs from Reuters)