aircraft carrier Liaoning(file photo)

QINGDAO, June 25 -- A flotilla with aircraft carrier Liaoning set out from Qingdao in east China on Sunday for a routine training mission, a military statement said.

The naval formation includes destroyers Jinan and Yinchuan, frigate Yantai and a squadron of J-15 fighter jets and helicopters.

The training mission, like previous ones, is expected to strengthen coordination among the vessels and improve the skills of crew and pilots in different marine regions.