From Beijing’s point of view, U.S. President Joe Biden’s recent visit to South Korea was concerning. For one, South Korean President Yoon Suk-yeol committed his country to joining the Indo-Pacific Economic Framework for Prosperity, despite China’s deep misgivings. Seoul and Washington also agreed to beef up their combined defense capability via expanded military exercises.

Significantly, Taiwan came up during the two leaders' joint press conference as well: Biden said he and Yoon were committed to “promoting stability across the Taiwan Straits as well; and ensuring freedom of navigation, including in the South China Sea and beyond.”