HANOI, March 1 (CGTN) -- In Hanoi, DPRK Foreign Minister Ri Yong Ho presented a rare and unexpected midnight news conference following the Trump-Kim summit.

During the conference, Ri Yong Ho disputed Trump's explanation for collapse of summit, saying the DPRK asked “for only partial U.S. sanctions relief.”

Ri said DPRK had asked for lifting five of the 11 sanctions under United Nations Security Council resolutions. Those measures, he said, were particularly damaging the livelihood of the DPRK people.

Ri said Pyongyang's position won't change even if U.S. seeks further talks.

“Chairman Kim got the feeling that he didn't understand the way Americans calculate” and may have “lost the will” for further negotiations.

The FM's statements contradicted the explanation by Trump, who hours earlier told reporters that the North had demanded a full removal of sanctions in exchange for shuttering the Yongbyon nuclear facility.

Ri says the DPRK was also ready to offer in writing a permanent halt of the country's nuclear and intercontinental ballistic missile tests and that Washington wasted an opportunity that “may not come again.”

According to Xinhua, DPRK leader Kim is scheduled to meet with top Vietnamese leaders on Friday and leave Saturday on his armored train for the return trip, through China, to DPRK.

Chinese State Councilor and Foreign Minister Wang Yi met with Ri Kil Song, vice foreign minister of the Democratic People's Republic of Korea (DPRK), in Beijing on Thursday.