SHANGHAI, May 13 - China and the United States should manage their differences over disputed waters in the East Vietnam Sea constructively, one of China's top military officials has said.

Fang Fenghui, a member of China's Central Military Commission, told General Joseph Dunford, chairman of the Joint Chiefs of Staff, the two sides should "refrain from actions detrimental to the relations between the two countries and the two militaries", state news agency Xinhua reported on Friday.

Fang and Dunford discussed the East Vietnam Sea in a video link-up on Thursday, it said.

The discussion comes at a time of heightened tension between China and the United States, which have traded accusations of militarizing the East Vietnam Sea as China implements large-scale land reclamation and construction on disputed features while the United States has increased its patrols and exercises.

On Tuesday, China scrambled fighter jets as a U.S. navy guided missile destroyer sailed close to a disputed reef in the East Vietnam Sea and denounced the patrol as an illegal threat to peace.

The U.S. defence department said the latest "freedom of navigation" operation was undertaken to "challenge excessive maritime claims" that restrict navigation rights in the East Vietnam Sea.

China claims most of the East Vietnam Sea, through which $5 trillion in ship-borne trade passes every year. The Philippines, Vietnam, Malaysia, Taiwan and Brunei have overlapping claims.

Fang said China was not to blame for tensions with the United States in the East Vietnam Sea and urged the two sides "to bear the overall situation in mind and manage their differences in a constructive way", Xinhua reported early on Friday.

Xinhua quoted Dunford as calling for restraint in the East Vietnam Sea, and saying the United States was willing to work with China to establish "an effective mechanism” on risk control so as to maintain stability in the East Vietnam Sea “by peaceful means.”