Taiwan’s defense ministry says China sent dozens of aircraft and vessels toward the island, just days after the United States approved a $500-million arms sale to Taiwan.

Taiwan’s defense ministry said Saturday that China sent dozens of aircraft and vessels toward the island, just days after the United States approved a $500-million arms sale to Taiwan.

The defense ministry said in a statement that 32 aircraft from the People’s Liberation Army and nine vessels from the navy were detected in the 24 hours between 6 a.m. Friday and 6 a.m. Saturday.

Of these, 20 aircraft either crossed the median line of the Taiwan Strait or breached Taiwan’s air defense identification zone. In response, Taiwan tasked its own aircraft, vessels and missile systems to respond to the activities, the defense military said.