China's aircraft carrier formation takes drills to East China Sea

ABOARD LIAONING AIRCRAFT CARRIER -- The Chinese aircraft carrier formation, featuring the carrier Liaoning, has undertaken live combat drills in the East China Sea.

On Sunday, the formation took part in anti-aircraft and anti-submarine warfare training with an "opposing force."

According to training commanders, upon detecting "enemy" aircraft using radar systems, the flotilla's ships swiftly changed positions and raised guns for defense. J-15 planes took off to intercept "enemy" jets.