"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.

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