Chinese Ambassador to the US Cui Tiankai. [Photo by Zhang Yu'an/chinadaily.com.cn]

The United States should do more to resolve the nuclear crisis on the Korean Peninsula than it has, Chinese Ambassador to the US Cui Tiankai said on Friday.

The ambassador said China has done its best to implement the UN Security Council resolutions in a strict and full fashion, while pushing for relevant parties to resolve problems through peaceful negotiations.

"Everybody else will have to do their share; they cannot leave this issue to China alone," Cui said.

Cui made the remarks on the sidelines of a reception at the embassy in Washington to mark the 68th anniversary of the founding of the People's Republic of China.

"Honestly, I think the United States should be doing … much more than now, so that there's real effective international cooperation on this issue," Cui said.

The ambassador said the US should refrain from issuing more threats. Instead, Washington should do more to find effective ways to resume dialogue and negotiations.

"We are fully prepared to implement all the Security Council resolutions, no more, no less," Cui said, adding that China expects other relevant parties to do the same.

The UN Security Council unanimously adopted resolution 2375 on Monday to respond to the Democratic People's Republic of Korea's sixth nuclear test, conducted on Sept 3.

The ambassador also said China will never recognize the DPRK as a nuclear state and opposes nuclear weapons anywhere on the Korean Peninsula.