China’s military sent 28 warplanes into Taiwan’s air defense identification zone Tuesday — the largest-known incursion to date — just days after Group of Seven nations urged “the peaceful resolution of cross-Strait issues.”

The massive show of force came after a relative lull in the number of Chinese sorties into the ADIZ and bested the previous record, 25 warplanes, that was reported on April 12. The latest mission included 14 J-16 and six J-11 fighter jets and four H-6 heavy bombers, which are capable of carrying nuclear weapons, as well as various surveillance and early warning aircraft, Taiwan’s Defense Ministry said in a statement.

The ministry said that Taiwanese aircraft were dispatched to warn away the Chinese warplanes, while missile systems were also deployed to monitor them.