- Tag results for Kim Jong Un
The White House, however, did not identify a location for the second setting between the two leaders.
Kim could not be seen but the limousine he uses was observed zipping east down a main thoroughfare in Beijing and then returning about an hour later.
The trip marked a further break with past practice in that it was announced in advance of Kim's arrival, a possible sign of growing confidence on the part of North Korea.
In an interaction with reporters at the White House, Trump said he had had "indirect" talks with Kim.
Trump's response comes after Kim said in his New Year Speech that he wants good relations with the US but could consider a change of approach if Washington maintains its sanctions.
He made that clear in his 2018 News Year's address and his government has been hammering it home ever since.
He said denuclearisation is important for a better future for the two Koreas, including reconciliation and reunification.
Moon made the remark onboard his presidential plane that Trump asked him during their meeting Friday at the G20 in Buenos Aires to personally convey the message to Kim, reports Efe news.
As officials work to arrange a second meeting between Trump and Kim, South Korea's Moon Jae-in relayed a message to reporters given to him by the US president to pass on to the North's leader.
Linking up the railway systems was one of the agreements made earlier this year in a key meeting between North Korean leader Kim Jong Un and the South's President Moon Jae-in.
It didn't appear to be a test of a nuclear device or a long-range missile with the potential to target the U.S.
The bases are arranged in three belts across North Korea, according to the report, with those for strategic missiles deep inside the country.
In 2013 Panama seized a North Korean ship carrying an undeclared Cuban arms shipment of Soviet-era weapons and fighter jets hidden under sacks of sugar.
The ministry said North Korea could bring back its "pyongjin" policy of simultaneously advancing its nuclear force and economic development if the United States doesn't change its stance.
It is speculated that Moon is determined to push ahead with diplomacy to resolve the nuclear issue.