Chinese President Xi Jinping has arrived for a two-day state visit to North Korea, where he’s expected to talk with leader Kim Jong Un about the stalled negotiations with Washington over North Korea’s nuclear weapons.

China’s official Xinhua news agency reported that Xi was accompanied by his wife, Peng Liyuan, and several Communist Party officials. He is the first Chinese president to visit North Korea in 14 years.

The summit comes as both Xi and Kim are locked in separate disputes with the United States – Xi over trade and Kim over his nuclear weapons.

A Xinhua commentary said China could play a unique and constructive role in breaking the cycle of mistrust between North Korea and the US so they can work out a roadmap to achieve denuclearisation.

The US is demanding that North Korea abandon its nuclear weapons development before international sanctions are lifted. North Korea is seeking a step-by-step approach in which a step toward its denuclearisation would be matched by a concession from the U.S., notably a relaxation of economic sanctions.

China backs what it calls a “suspension for suspension” proposal. The Xinhua said both sides “need to have reasonable expectations and refrain from imposing unilateral and unrealistic demands”.

Experts say Xi will likely endorse North Korea’s calls for an incremental disarmament process.

Chinese and North Korea media have said Xi would stay in Pyongyang for two days. His meeting with Kim would their fifth summit since Kim entered nuclear diplomacy with the United States and South Korea early last year.