An unofficial meeting of the leaders of the DPRK and the PRC will take place in China

Open source
The high-ranking North Korean officials arrived at Beijing by the plane on June, 19. This is reported by Kyodo.
The source reports that the North Korean leader Kim Jong-un arrived in China for a two-day visit. During the meeting, he is expected to brief Chinese president, Xi Jinping on US-DPRK summit and discuss its further conduct of negotiations.
Recall that US President Donald Trump gave his phone number to the North Korean leader Kim Jong-un for easier to communicate.
As «The Journalist» reported, Donald Trump and Kim Jong-un sign historical agreement.