Only four staff members are needed to breed millions of black snappers. At the 2022 China Ocean Economic Expo held in Shenzhen, the large deep-sea intelligent cage "Jinghai 001" in CIMC's exhibition area was impressive. This 68 meter long, 68 meter wide and 40 meter high "deep-sea fish pond" can produce 1000 tons of fish annually. In addition to providing energy through wind and photovoltaic power generation, it also carries intelligent monitoring, automatic feeding, underwater robot net washing and other equipment. "The cage is equipped with more than 200 sensors, and the number and growth status of fish can be captured in real time through the 'fish face recognition' system." Pan Xilu, strategic director of Yantai CIMC Raffles Marine Technology Group Co., Ltd., said that "Jinghai 001" has stable aquatic data and a clear business model, "With stable data, finance and insurance will be brought, and we can build the back cage through financial leasing." "Jinghai 001" is the epitome of high-quality development of China's marine industry. The reporter visited the Expo and found that China's marine economy is booming, with wind, light, hydrogen, fishing, tourism and other fields making efforts, and showing a development trend of innovation, green integration, and deepening cooperation and sharing. 174000 cubic meters LNG carrier, "Endeavor" manned submersible, 100000 ton deep-water semi submersible production and storage platform "Deepwater No.1"... At the Expo, a number of high-tech, high value-added "big country heavy vehicle" models attracted many tourists. China Marine Economy Expo is the only national marine economy exhibition in China, and is known as "China's first marine exhibition". The Expo was held in Shenzhen from November 24 to 26, and more than 1000 exhibitors and 7000 exhibits from home and abroad participated through online and offline channels. At present, the pace of marine technology innovation is gradually accelerating. More and more subversive technologies, such as biomedical technologies represented by the development of deep-sea biological genetic resources, as well as marine satellites, high-tech new materials, artificial intelligence and big data, chip sensors, have a significant impact on China's marine economy. The data shows that China's marine industrial structure has been further optimized, and the drive for marine scientific and technological innovation has continued to deepen. In 2021, the added value of marine emerging industries will double that of 2015, and new driving forces will be actively enhanced. "The complexity and variability of marine natural conditions determine that the development of marine economy requires higher technology than that of land economy, and the development of marine industry in the future will be driven more by innovation," said He Guangshun, Director of the Marine Strategic Planning and Economics Department of the Ministry of Natural Resources. The ocean is one of the three major ecosystems of the earth. The realization of the "double carbon" goal is inseparable from the sustainable development of the ocean and the construction of marine ecological civilization. At this Expo, green, low-carbon and environmental protection has become the new theme of marine economic development. In the exhibition area of CIMC Group, new marine energy solutions such as wind power generation, photovoltaic power generation, tidal power generation, offshore hydrogen generation, and ship carbon capture are dazzling; In the exhibition area of China Shipbuilding Group Co., Ltd., various "green ships" using electricity, hybrid power and clean energy provide different types of energy-saving and environment-friendly shipping solutions. In addition, the green aquaculture equipment and technology of the deep sea