Fishermen's Opening and Thanking Festivals are a special folk activity in my country's coastal areas, mainly spread in Xiangshan County and Daishan County of Zhejiang Province and Rongcheng City, Rizhao City, Jimo City of Shandong Province. The Opening and Thanking Festivals of Fishermen in Xiangshan and Daishan, Zhejiang Province is a folk activity held by local fishermen to pray for peace and a good harvest when their fishing boats go out to sea, while the Thanking Festival is a folk activity held by fishermen to thank the sea for its gifts after their fishing boats return safely from the sea. As a spiritual activity to express the fishermen's inner wishes, the Opening and Thanking Festivals are centered on sacrifices and based on folk art performances. They contain a variety of cultural contents and show the characteristics of entertaining gods and people. According to records, the Opening and Thanking Festivals of Fishermen in Xiangshan have a history of more than a thousand years, and they were most prosperous during the Yongzheng period of the Qing Dynasty to the Republic of China. The festival is mainly about offering sacrifices to the sea. Its great influence, wide participation, and long history are rare among the many fisherman customs in the Zhoushan Islands. During every fishing season, a sea sacrifice ceremony is held at the opening and closing times. Fishermen call it "Thanking the Dragon with Water Wine" or "Xing Wen Shu". Historically, Daishan's sea sacrifices are divided into official sacrifices and civilian sacrifices. The etiquette is fixed and the procedures are complete. At present, some fishing villages in Daishan still follow this traditional folk custom. As a representative of Zhoushan folk customs, the opening and closing times of the sea reflect the East China Sea fishermen's belief and worship of the Dragon King and the gods of the sea, and show the wisdom of the people in the eastern coastal areas of my country to live in harmony with nature. Yuankuang Village, Rongcheng City, Shandong Province has a very unique geographical location and climate. During the Grain Rain solar term, deep-sea fish and shrimp will follow the law of seasonal migration to the offshore waters of the Yellow Sea south of Yuankuang Village. Therefore, the sayings of "fish and birds do not break their promises" and "hundreds of fish come ashore during Grain Rain" are circulated in the local area. Yuankuang fishermen place their hopes for the safety and harvest of their fishing careers at sea on the Dragon King of the East China Sea. They choose Grain Rain Day to offer sacrifices to the sea to express their piety and pray for the Dragon King's blessing. The coastal towns and villages along the coast of Rizhao, Shandong Province, such as Liangcheng Town, Shijiusuo, and Peijia Village, have been mainly engaged in fishery production since ancient times. According to local legend, the 13th day of the sixth lunar month is the birthday of the Dragon King of the Sea. At that time, fishermen gather at the Dragon King Temple to hold worship activities and arrange fishery production for the next year. This custom of worshiping the sea god was formed during the Hongwu period of the Ming Dynasty, and it is a concrete manifestation of the fishermen's wish for safety and a good harvest. The Internet Festival in Zhouge Village, Tianheng Town, Jimo City, Shandong Province, also known as "Sea Sacrifice", is a grand festival for local fishermen. The Internet Ceremony first took shape during the Yongle period of the Ming Dynasty, and then gradually evolved into a folk custom activity that has been passed down to this day. The Zhouge Village Internet Festival is mostly held around the Grain Rain every year. The fishermen in the village who are about to go out to sea worship the sea god with a pious heart to pray for safety and a good harvest. The Fishermen's Opening and Thanking Festivals are typical representatives of traditional marine culture, and have important reference value in the study of folklore, religion, social psychology, local history and culture, etc. It is necessary to take measures to protect and inherit this ancient marine folk custom. (No pictures available, please provide them.) (No pictures available, please provide them.)