Assisted by tugboats, China's first domestically built aircraft carrier leaves its shipyard in Dalian, Liaoning Province, embarking on its second sea trial on Sunday morning, August 26, 2018. (Photos: VCG)

The new carrier is the largest and most sophisticated naval vessel in China.

The ship made its maiden sea trial in mid-May to demonstrate the reliability and performance of its propulsion systems.

The new carrier is the largest and most sophisticated naval vessel in China. Construction began in November 2013.