China's self-developed Haiqin remotely operated vehicle (ROV), designed for deep-sea exploration up to 6,000 meters, has successfully completed its maiden voyage in the South China Sea. During the trial on August 23, the ROV reached a depth of 4,140 meters, validating the performance and functionality of the entire system. Equipped with high-definition cameras, robotic arms, sonar systems, and sensors, the Haiqin represents a milestone in China's deep-sea technology capabilities. This achievement complements other recent advancements in China's maritime technology sector, including the commissioning of the Mengxiang drilling vessel, the operational status of the Fendouzhe manned submersible, and the forthcoming connection of the seabed scientific observation network. Additionally, China has launched Asia's largest trailing suction hopper dredgers in Jiangsu Province, each measuring 198 meters in length with a 35,000-cubic-meter hopper capacity, further underscoring the country's expanding marine engineering capabilities.