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Candid communication between Beijing and Washington is expected to disperse the tension over China's air defense identification zone and contribute to regional stability, observers said on the eve of US Vice-President Joe Biden's East Asia trip.

Saying that Biden will seek clarification on China's newly designated ADIZ, a senior US administration official said Biden is "going to have a very high-level and a very wide-ranging dialogue with the senior Chinese leadership that covers a wide range of shared interests".

Biden is scheduled to land in Japan on Monday for the first leg of his weeklong trip. The trip will also bring him to China on Wednesday for two days before he winds up his tour in South Korea.

Biden will meet with President Xi Jinping, Vice-President Li Yuanchao and Premier Li Keqiang in China.

Shen Dingli, associate dean of the Institute of International Studies at Fudan University in Shanghai, said Biden's visit is a further step to regularize high-level exchange visits, boost the new type of major country relations, dismiss distrust and assure China that the US pivot to Asia-Pacific doesn't specifically target China.

Shen said he believes the East China Sea ADIZ will be a focus of discussion.

Niu Jun, a professor of US studies at Peking University, said Washington would not want to see regional tensions escalate, and Biden can act as a peacemaker, given his strong personal relations with leaders of the countries concerned.

"Biden's talk with Japanese Prime Minister Shinzo Abe will also cover a broad range of issues from diplomacy to security, while commercial ties will be at the top of his China agenda," Niu said.

Stapleton Roy, a scholar at the Kissinger Institute on China and the US at the Wilson Center, said that one of the major aims of Biden's tour is to reduce and manage differences between the countries.

"The US and China have a common interest in peace and stability in East Asia, but their approaches will often differ because of historic and geographic factors and the dissimilar nature of their relations with countries in the region," Roy said.

On Friday, Washington advised US commercial airlines to comply with China's demand to report any flights passing through China's ADIZ.

"The US government generally expects that US carriers operating internationally will operate consistent with Notices to Airmen issued by foreign countries," said a statement from the Spokesman's Office of the US State Department.

The expectation, however, "does not indicate US government's acceptance of China's requirements for operating in the newly declared ADIZ", it said.

Following the advice, US airlines United, American and Delta said they have notified Chinese authorities of flight plans when traveling through China's zone.

In contrast, two major Japanese airlines - ANA Holdings and Japan Airlines - have flown through the zone without informing China as required.

（中國日報網英語點津 Helen 編輯）

About the broadcaster:

Lance Crayon is a videographer and editor with China Daily. Since living in Beijing he has worked for China Radio International (CRI) and Global Times. Before moving to China he worked in the film industry in Los Angeles as a talent agent and producer. He has a B.A. in English from the University of Texas at Arlington.