People watch a competition of underwater robots during the Qingdao International Ocean Science and Technology Exhibition in Qingdao, East China’s Shandong province, Sept 12, 2018. The exhibition opened here on Sept 12, and will last for three days. [Photo/Xinhua]
People watch an ocean environment-monitor buoy model during the Qingdao International Ocean Science and Technology Exhibition in Qingdao, East China’s Shandong province, Sept 12, 2018. [Photo/Xinhua]
People watch an underwater robot during the Qingdao International Ocean Science and Technology Exhibition in Qingdao, East China’s Shandong province, Sept 12, 2018. [Photo/Xinhua]
People watch an unmanned aerial vehicle during the Qingdao International Ocean Science and Technology Exhibition in Qingdao, East China’s Shandong province, Sept 12, 2018. [Photo/Xinhua]
People watch an unmanned aerial vehicle during the Qingdao International Ocean Science and Technology Exhibition in Qingdao, East China’s Shandong province, Sept 12, 2018. [Photo/Xinhua]
