The Chinese military began live drills around Taiwan on Monday, coinciding with the arrival of another U.S. congressional delegation to Taipei.
According to Taiwan's Ministry of National Defense, 22 Chinese military aircraft and six naval ships breached Taiwan's air defense identification zone on Sunday, just as a delegation led by U.S. Sen. Ed Markey, D-Mass., arrived on the island.
A spokesman for China's defense ministry condemned the visit, calling it a provocation that deters peace.
"This is a resolute counterstrike and solemn deterrence to the consecutive provocations by the U.S. and Taiwan that undermine peace and stability across the Taiwan Strait," said Wu Qian, a spokesman for China's defense ministry.