The Korean official report says that Kim departed for China, with his wife to meet the Chinese President Xi Jinping. The reason for the meeting is unknown, though earlier news says that Kim had traveled thrice to China to meet the President. This happened right before and after the summit that was held between Kim and Donald Trump.
Other sources say, it is Xi Jinping, who has invited Kim for an official meeting. South Korean News Agencies have confirmed that a special North Korean train entered China on Tuesday morning. Kim was also accompanied by a few of his leading officials.
It is also said that Kim is looking forward for Xi Jinping to relieve the enforcement of sanctions against Korea.