![Chinese research vessel Science waits to depart from the city of Qingdao, East China\'s Shandong province, May 18, 2019. (Photo/Xinhua)](http://www.ecns.cn/hd/2019/05/20/167d35d794f749d1b5281bf43d0a2466.jpg)
Chinese research vessel Science waits to depart from the city of Qingdao, East China's Shandong province, May 18, 2019. (Photo/Xinhua)
![Chinese research vessel Science waits to depart from the city of Qingdao, East China\'s Shandong province, May 18, 2019. (Photo/Xinhua)](http://www.ecns.cn/hd/2019/05/20/cdd2af81bf8646dfadfca169e97f7e3c.jpg)
Chinese research vessel Science waits to depart from the city of Qingdao, East China's Shandong province, May 18, 2019. (Photo/Xinhua)
![Chinese research vessel Science departs from the city of Qingdao, East China\'s Shandong province, May 18, 2019. (Photo/Xinhua)](http://www.ecns.cn/hd/2019/05/20/610a93f921a04319bc2b7699a2f7d5df.jpg)
Chinese research vessel Science departs from the city of Qingdao, East China's Shandong province, May 18, 2019. (Photo/Xinhua)
![Photo taken on May 18, 2019 shows an unmanned remote sensing submersible equipped for Chinese research vessel Science. (Photo/Xinhua)](http://www.ecns.cn/hd/2019/05/20/bc2e27ab349b4986a60d8c959135e2e1.jpg)
Photo taken on May 18, 2019 shows an unmanned remote sensing submersible equipped for Chinese research vessel Science. (Photo/Xinhua)