A container carrying China's new-generation Long March-7 rocket is seen at the port in north China's Tianjin, May 7, 2016. The Long March-7 rocket departed for its launch base in Hainan on Sunday from Tianjin. The first flight of Long March-7 will take place in late June, according to CASC’s deputy manager Yang Baohua, and will test the design and performance indicators.