Meanwhile, North Korean leader Kim Jong Un expressed hope that interested parties will provide assistance in the process of denuclearlization on the Korean Peninsula.
Kim's grandfather Kim Il Sung was also adept at playing off Communist rivals Beijing and Moscow against each other during the Cold War to extract concessions from both. "China and the DPRK are friendly and close neighbours and it is also an important tradition for us to maintain friendly exchanges", Lu said, referring to North Korea's formal name.
The comments, contained in Chinese state media reports Thursday, came a day after Kim left Beijing on his special armored train after a two-day visit to the Chinese capital.
Tuesday was Kim's birthday but there was no word of any official celebrations.
Doing so, however, would not be possible without willingness from the United Nations or U.S.to lift sanctions related to the effort.
Xi Jinping said that "the legitimate issues raised by the DPRK are rightful demands and that he fully agrees that the DPRK's reasonable interests should be justly resolved".
"We welcome North Korea's intention to resume their operation without conditions or compensation", Moon said.
At their first meeting in Singapore in June, Kim and Trump signed a vaguely worded document with Kim pledging to work towards the "denuclearization of the Korean peninsula".
Some experts say the sanctions relief, if pursued before South Korea's ally Washington is ready, could weaken ties with the United States and complicate efforts to rid the North of its nuclear weapons.
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Discussions between the USA and North Korea over Pyongyang's nuclear arsenal have stalled since Kim and Trump's high-profile summit in Singapore in June where they issued a vaguely worded declaration about denuclearisation.
At Tuesday's daily Foreign Ministry briefing, spokesman Lu Kang said Beijing remains supportive of efforts to end tensions over US demands for a halt to North Korea's nuclear and missile programs.
Kim spent around half an hour touring a pharmaceutical factory operated by Tong Ren Tang, the largest producer of traditional Chinese medicinal products.
He then went to the Beijing Hotel, where he was expected to have lunch with Xi before his departure.
Kang added.it appears talks are underway between North Korea and the U.S.to settle on a location for the summit, . adding Seoul will also closely communicate with Washington on the matter.
In the New Year speech, Kim focused on North Korea's moribund economy, saying that improving people's lives was his top priority and tackling energy shortages was an urgent task.
"For this point, he must ask for advice from China".
As Kim's armored train pulled into Beijing Railway Station on Tuesday, a few blocks away a US trade delegation was hammering out differences with their Chinese counterparts in an effort to end the trade war between the two countries.
Analysts say China could use the North Korean issue as a bargaining chip in the negotiations, but Beijing's foreign ministry rejected any link between Kim's trip and the talks. Experts agree that while neither the U.S. nor China is "winning" in the trade war, China may be at a disadvantage.