The Trump administration's decision to go ahead with the sale of $1.4 billion worth of arms to Taiwan would severely threaten US-Chinese relations, China's ambassador to Washington said.
Chinese foreign ministry spokesman Lu Kang on Friday said Washington should immediately cancel the deal.
He said the deal would damage China’s sovereignty and security interests and undermines Washington’s commitment to a "one-China" policy.
The U.S. State Department approved the arms sales on Thursday, the first such deal with Taiwan since President Donald Trump took office. Taiwan has welcomed the agreement, which is expected to enhance the island’s self-defense capability.
China considers the self-governing island to be its own territory and has long opposed any arms sales to Taiwan by foreign entities.
The Associated Press contributed to this report.