Mr Trump and Mr Kim met in Singapore last year

Reports say after his surprise visit to China, North Korean leader Kim Jong-un left with backing for a possible second summit with US President Donald Trump.

Mr Trump and Mr Kim first met last June, but progress over denuclearisation has since stalled.

Reports say Chinese President Xi Jinping said he hoped the two leaders “meet each other halfway”.

China is the North’s main ally and key trade partner.

Mr Xi said China supported North Korea and the US “holding summits and achieving results, and supports relevant parties resolving their respective legitimate concerns through dialogue”.

He also said China would be ready to play a “positive and constructive role” towards maintaining peace and achieving denuclearisation on the Korean peninsula.

Mr Kim made what is believed to be his first official trip outside North Korea to China last year, even before meeting South Korea’s President Moon and Mr Trump.

The recent visit is Mr Kim’s fourth to China in less than a year.

During his three-day visit to China, Mr Kim and his wife Ri Sol-ju were welcomed by Mr Xi and his wife with a banquet and an art performance.

He also visited a pharmaceutical plant specialising in Chinese medicine.

The state media said Mr Xi accepted an offer to visit North Korea, although it is still unclear when this would take place.