J-15 carrier-based fighter jets, mounted with multiple types of live ammunition, lifted off one after another, kicking off a multi-batch live-fire training. In order to get close to the actual combat, the training set up multi-aircraft formation flights, sea ultra-low-altitude, sudden defense and other combat-oriented courses. J-15 carrier-based fighter jet, nicknamed the "Flying Shark," is China's first-generation multipurpose carrier-based fighter jet.