![China's second aircraft carrier concludes first sea trials(1/9)](http://www.ecns.cn/hd/2018/05/18/d50ed562a41e47e3aad73a8e109d6e83.jpg)
China's second aircraft carrier returns to dock at Dalian Shipyard in Northeast China's Liaoning Province, May 18, 2018, after its first sea trials. The aircraft carrier, the country's first domestically-built one, was launched in April last year and began the sea trials on May 13. (Photo/81.cn)