China’s president, Xi Jinping, has never met Mr. Kim. Mr. Kim has not visited China since he became North Korea’s leader in 2011, despite a partnership between the two Communist neighbors. If Mr. Kim was on the train, it would be his first trip outside his country as North Korea’s leader. If he meets Mr. Xi before his planned meetings with Mr. Trump and Mr. Mr. Trump accepted the invitation on the spot and said he would meet Mr. Kim by May.

Source: New York Times March 26, 2018 18:20 UTC