Kim and President Xi had a one-on-one chat, . where they reportedly exchanged opinions on the current situation and urgent global issues.
"Presumably, if North Korea does destroy the Sohae facility, they are also signaling that they are willing to stop satellite/rocket launches this time around as well, a point that has derailed negotiations in the past and is a significant new development", she said.
As for Mr Xi, he probably hopes - through his growing influence on the North Korea issue - to give Mr Trump an "indirect warning" that if he angers China, it could undermine him on the issue, said Prof Shi. The visits to the two locations were also reported by Chinese media.
More than 35,000 Americans died on the Korean Peninsula and 7,702 are still missing in action, according to the Defense POW/MIA Accounting Agency.
"It seems like the economy is one of its major areas of interest", he said, adding that Pyongyang appeared to be focusing its efforts on cooperating with China in a bid to bring about an end to the United Nations sanctions.
The state-run media report said Kim paid close attention to how the system works and said he was (quote) "amazed" by the excellently programmed control system. Trump's remarks about the remains on June 20 were part of a broader description of progress made in North Korea.
In 2003, during his first stint as premier, he introduced the controversial "July 1 Economic Measures".
The official confirmed for the first time that the site identified by Mr. Kim was the Sohae Satellite Launching Ground, a facility in Ch'olsan County, North Pyongan province. When the United Kingdom complained in 2011 that the alleged remains of a British fighter pilot were not a pilot, British, or human, the North Korean military replied, "Too bad".
Deng Yuwen of the Charhar institute in Beijing, said China would be seeking to use North Korea as a bargaining chip amid heightened trade tensions between Washington and Beijing. Cai Qi, member of the Political Bureau of the CPC Central Committee and secretary of the CPC Beijing Municipal Committee, accompanied Kim on his tour.
Trump hailed a "tremendous success" following a landmark summit between him and North Korean supreme leader Kim Jong Un earlier this month in Singapore-the first-ever meeting between a sitting usa president and a North Korean ruler.
"We are pleased to see that the important consensus reached by China and the DPRK is gradually being implemented, the friendly cooperative relations between the two sides are radiating new vitality, the momentum for dialogue and easing of situation on the Korean Peninsula has been effectively strengthened, and the WPK's new strategic route has pushed the DPRK's socialist cause into a new journey", Xi said.
He added that, "it's the very front end of a process".