China says UN should discuss N Korea sanctions relief

China called Friday for North Korean sanctions relief to be discussed at the UN Security Council after US President Donald Trump and Kim Jong Un ended a summit without a deal.

Beijing is the North's main trade partner and sole major ally, but it has backed a raft of UN sanctions following Pyongyang's repeated nuclear and missile tests in recent years.

Both North Korea and the US note that lifting sanctions is an important part of the denuclearisation process, said Chinese foreign ministry spokesman Lu Kang.

"They should be considered simultaneously and resolved together, I think this is a common denominator that should be seized," Lu said at a regular press briefing.

Noting "the positive developments on the peninsula, especially the steps taken by North Korea on denuclearisation," Lu said the UN Security Council should "start discussions on the reversible clauses of the resolutions."