A spokesperson for China's foreign ministry said Beijing would take "all necessary measures" and warned the U.S. that Taiwan is "a red line that must not be crossed," Reuters reported. The aid package totals $571 million.

The Chinese government is protesting the latest American announcements of military sales and assistance to Taiwan, warning the United States that it is “playing with fire.”

China criticised new U.S. military aid to Taiwan on Sunday, saying the $571 million package seriously violates the "one China principle" and provisions of joint communiques between China and the U.S.