An aerial drone photo taken on June 22, 2024 shows the deep-sea heavy-duty mining vehicle "Pioneer II" undergoing a sea trial. China's deep-sea heavy-duty mining vehicle has completed a sea trial at a depth exceeding 4,000 meters, marking a significant breakthrough in the country's deep-sea mineral resource development technology. (Photo: Xinhua)
An aerial drone photo taken on June 22, 2024 shows the deep-sea heavy-duty mining vehicle "Pioneer II" undergoing a sea trial. China's deep-sea heavy-duty mining vehicle has completed a sea trial at a depth exceeding 4,000 meters, marking a significant breakthrough in the country's deep-sea mineral resource development technology. (Photo: Xinhua)
This photo taken on June 26, 2024 shows a deep-sea mineral sample collected by the deep-sea heavy-duty mining vehicle "Pioneer II." China's deep-sea heavy-duty mining vehicle has completed a sea trial at a depth exceeding 4,000 meters, marking a significant breakthrough in the country's deep-sea mineral resource development technology. (Photo: Xinhua)
This photo taken on June 20, 2024 shows the deep-sea heavy-duty mining vehicle "Pioneer II" developed by Shanghai Jiao Tong University. China's deep-sea heavy-duty mining vehicle has completed a sea trial at a depth exceeding 4,000 meters, marking a significant breakthrough in the country's deep-sea mineral resource development technology. (Photo: Xinhua)