Blinken will depart on April 23 for a four-day trip to China, where he will meet with senior Chinese officials amid heightening tensions, including over China's alignment with Russia and aggressive moves against the Philippines in the South China Sea, Politico reported.

Blinken is also expected to raise U.S. concerns that Beijing is helping Russia build up its defense industry to fight the war in Ukraine.

"China welcomes Secretary of State Blinken to visit China in the next few days," said Chinese foreign ministry spokesperson, Lin Jian, at a regular press briefing.

Blinken is visiting the world's second-largest economy to help smooth over recent strains, most notably after U.S. President Joe Biden on Wednesday called for sharply higher tariffs on Chinese metal products.

"As a matter of principle, we have consistently demanded the United States earnestly respect the principles of fair competition, respect WTO rules, and immediately stop the trade protectionist measures aimed at China," Lin said.

Biden aides said the U.S. president was proposing raising to 25% tariffs imposed by his predecessor Donald Trump on certain Chinese steel and aluminum products. The proposed higher tariff rate would apply to more than $1 billion worth of steel and aluminum products, a U.S. official said.

"China will take all necessary measures to protect its own legitimate rights and interests," Lin said.

(Reporting by Eduardo Baptista; Writing by Bernard Orr; Editing by Muralikumar Anantharaman and Tom Hogue)