U.S. Secretary of State Antony Blinken arrived early Saturday in Laos, where he will attend a regional meeting and hold talks with his Chinese counterpart, part of a multination Asia visit aimed at reinforcing ties with regional allies in the face of an increasingly assertive Beijing.

The top U.S. diplomat is due to meet China's Wang Yi on the sidelines of an Association of Southeast Asian Nations foreign ministers meeting being held in Vientiane.

Blinken has prioritized promoting a "free and open" Asia-Pacific region – a thinly veiled criticism of China's regional economic, strategic and territorial ambitions.

During a series of ASEAN meetings, "the secretary's conversations will continue to build upon the unprecedented deepening and expansion of U.S.-ASEAN ties," the State Department said in a statement shortly before Blinken touched down in Vientiane.

This is Blinken's 18th visit to Asia since taking office more than three years ago, reflecting the fierce competition between Washington and Beijing in the region.

He notably arrived two days after the foreign ministers of China and Russia met with those from the 10-nation ASEAN bloc – and each other – on the sidelines of the summit.

Wang and Blinken would "exchange views on issues of common concern," China's foreign ministry spokeswoman Mao Ning said Friday.

Blinken is expected to "discuss the importance of adherence to international law in the South China Sea" at the ASEAN talks, according to the U.S. State Department.