In the fish breeding workshop of the Hengsheng Aquaculture Professional Cooperative (hereinafter referred to as the "Cooperative") in Shaba Town, Yangxi County, Yangjiang, rows of breeding buckets stand tall, and schools of different species of fish such as pearl spots, dragon pontoons, and pointed snouted bass swim back and forth in the buckets. "In addition to seawater seedling cultivation, the cooperative plans to further expand its scale in the future, and is also preparing to expand business such as oyster farming, leisure fishing, and deep-sea cage farming. We need financial support very much," said Lin Liquan, the chairman of the cooperative. Guangdong is born out of the sea, but it must thrive and become strong because of the sea. The Third Plenary Session of the 13th Provincial Party Committee emphasized the need to comprehensively promote the construction of a strong maritime province and make new breakthroughs in building a new maritime Guangdong. Since the beginning of this year, Guangdong has clearly proposed the implementation of the "finance+ocean" project. For financial institutions, what business space has Guangdong's vigorous development of marine ranching brought? What financial resources are needed to support ocean ranches? How can financial resources better safeguard the construction of marine ranches? In this survey, reporters and financial experts from the banking and insurance industries visited Yangjiang, the prefecture level city in Guangdong Province with the largest number and area of national marine ranch demonstration zones, to find answers. Innovating and optimizing financial guarantees to reduce financing costs for marine ranches. Seawater seedlings are known as the "chip" of marine aquaculture and are a strategic and fundamental core industry for the development of marine ranches. "In the past, the breeding of marine fish fry could only rely on 'watching the weather and eating'. Now, through technology empowerment and transformation of the breeding environment, controlling water temperature, brightness, salinity, and diseases, parent fish can achieve year-round spawning." Lin Liquan introduced. Guangdong vigorously develops marine pastures and builds marine granaries, opening up new development space for the fish fry aquaculture industry in Yangxi County. Lin Liquan introduced that the cooperative has formed a circular production chain of "parent fish egg fish fry finished fish", with an annual production of over 300 million commercial fish fry and a production value of over 100 million yuan. The development of industries requires financial support. "With the support of a million yuan loan from China Construction Bank, our business is getting bigger and bigger," said Lin Liquan. Under the nourishment of financial "living water", more and more farmers like Lin Liquan are looking forward to the sea, and Guangdong's "blue granary" is becoming more abundant. "The construction of ocean ranches is a key planning project in Yangjiang City. In recent years, we have continuously innovated and optimized services to provide financial support for the development of ocean ranches." Yuan Yebo, Deputy General Manager of the Inclusive Finance Business Department of the Yangjiang Branch of China Construction Bank, introduced that the ocean ranch industry chain has become the "new blue ocean" of the bank's business. Yuan Yebo is an old friend of many farmers in Shaba Town, and understanding the financial needs of enterprises on the rural front line is his daily job. In Shapao Town, aquaculture companies like Hang Seng Aquatic that require funding are not an exception. "Our company plans to further expand the scale of factory aquaculture, and also plans to build a marine fish culture museum, create an industry university research and science popularization base, which requires a lot of funds." Chen Chao, General Manager of Yangxi County Jinyuan Marine Biotechnology Research Co., Ltd. and President of Yangjiang Marine Seed Industry Innovation and Development Association, also deeply understands this. Ocean ranches have broad prospects, and continuous investment is an important part of their construction. How to leverage financial power to do a good job in the big article of "sea"? Since the beginning of this year, Guangdong has released the "20