China lodges complaint after Biden vows to help Taiwan during invasion

The Chinese foreign ministry said on Monday that China has lodged "stern representations" with the United States, after U.S. President Joe Biden said U.S. forces would defend Taiwan in the event of a Chinese invasion.

China reserves the right to take all necessary measures in response to activities that split the nation apart, said Mao Ning, spokesperson at the foreign ministry, at a regular media briefing.

"We are willing to do our best to strive for peaceful reunification. At the same time, we will not tolerate any activities aimed at secession," Mao said.

She also urged the U.S. to handle Taiwan-related issues "carefully