Chinese state media on Monday continued to play down the protocol-bending phone call last week between U.S. President-elect Donald Trump and Taiwan's president, with editorials in two newspapers saying the move showed Trump's inexperience.
China's national English-language newspaper, the China Daily, said the 10-minute call "exposed nothing but the inexperience Trump and his transition team have in dealing with foreign affairs".
"The action was due to a lack of a proper understanding of the sensitive issues in Sino-U.S. relations and cross-Strait ties," it said.
The Friday call was the first by a U.S. president-elect or president since President Jimmy Carter switched diplomatic recognition from Taiwan to China in 1979, acknowledging Taiwan as part of "one China".
China's Foreign Ministry said on Saturday it had lodged "stern representations" with what it called the "relevant U.S. side," urging the careful handling of the Taiwan issue to avoid any unnecessary disturbances in ties.
China considers Taiwan a wayward province and has never renounced the use of force to bring it under its control.
Chinese Foreign Minister Wang Yi on Saturday pointedly blamed Taiwan for the exchange, rather than Trump, calling it "a petty action".