Scientific researchers bid farewell to relatives and colleagues at a port in Xiamen, southeast China's Fujian Province, July 23, 2017. China's independently-made marine science expedition vessel Kexue left Qingdao in east China's Shandong Province last Monday for a maritime scientific expedition and stopped in Xiamen, southeast China to resupply Friday after completing the first part of the mission. It left Xiamen on Sunday for the mission's second stage. (Xinhua/Zhang Xudong)
