The Fishermen's Opening and Thanking Festival in Xiangshan and Daishan, Zhejiang Province is a folk activity held by local fishermen when their fishing boats go out to sea to pray for peace and a good harvest. 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 centered 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 from 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 fishing customs in Zhoushan Islands. Every time there is a fishing season, a sea offering ceremony is held during the Opening and Thanking Festivals. Fishermen call it "Thanking Dragon Water Wine" or "Xing Wenshu". Historically, Daishan's sea offerings are divided into official and civilian offerings. 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 Kaiyang and Xieyang Festivals 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. The geographical location and climate of Yuankuang Village, Rongcheng City, Shandong Province are very unique. During the Grain Rain solar term, deep-sea fish and shrimp will follow the law of seasonal migration to the Yellow Sea offshore waters south of Yuankuang Village. Therefore, the sayings of "fish and birds never 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 on the Dragon King of the East China Sea, and they choose the Grain Rain Day to offer sacrifices to the sea to express their piety and pray for the Dragon King's blessing. The coastal villages and towns 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 the next year's fishery production. This custom of worshiping the sea god was formed during the Hongwu period of the Ming Dynasty. It is a concrete manifestation of the fishermen's wishes for safety of their boats and a good harvest. The Internet-surfing festival in Zhougezhuang Village, Tianheng Town, Jimo City, Shandong Province, is also known as "Sea Sacrifice", and is a grand festival for local fishermen. The Internet-surfing 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 Zhougezhuang Internet-surfing 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 the Sea Festival is a typical representative of traditional marine culture. It has 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 yet, welcome to provide.) (No pictures yet, welcome to provide.)