The folk activity of "worshipping the god of tide" in Haining has a long history. The initial sacrificial activities were spontaneously formed by the people along the river, and were generally based on burning incense and praying. Later, it gradually became a large-scale folk custom of worshiping the gods and praying for peace, playing with the tide to show courage, and entertaining the gods and themselves. In Haining, the saying about the god of tide has existed since ancient times. According to legend, during the Spring and Autumn Period and the Warring States Period more than 2,000 years ago, the two countries of Wu and Yue competed for hegemony. Wu Zixu served the State of Wu, and Wen Zhong helped the State of Yue to succeed. In the end, Wu Zixu was defiled and was given the "Shulou" sword by King Fuchai of Wu. Before his death, he told his son: "Hang Wu's eyes in the east to watch the Yue army coming to attack Wu, wrap my body and throw it into the river, I will come to the court every morning and evening, and watch Wu's defeat with a porcupine." The day when Wu Zixu's body was thrown into the Qiantang River was the 18th day of the eighth lunar month. Since then, he has driven a plain car and a white horse to drive the tide every day. The people respected him as the God of Tide, held grand sacrifices, and designated this day as the birthday of the God of Tide. The "Old Records of Haining" in the "Records of Haining City" records: "From the 13th to the 18th day of the eighth lunar month, men and women go to the waves to watch the tide." In the old days, Haining worshipped the God of Tide very devoutly, and built 9 temples such as the Wugong Temple; after the construction of the "Temple of the Sea God" (commonly known as the Temple Palace) in Yanguan in the ninth year of the Yongzheng reign of the Qing Dynasty (1971), the God of Tide in each temple was worshipped here. Since the Yongzheng reign of the Qing Dynasty, in addition to official sacrifices, it has been very common for each township to set up temples for sacrifices in Haining, and usually the main sacrifice is for the people. The Temple of the Sea God extends more than 200 miles along the seawall of the river from east to west, with a temple every three miles and a temple every seven miles. According to the "Records of Place Names of Haining", there are a total of 27 temples along the seawall, although they vary in size, but they are all built to worship the God of Tide. Every year on the birthday of the God of Tide, the local people must hold a grand sacrificial ceremony. In addition, temples are set up to commemorate the meritorious people who built the seawall and resisted the tidal disasters, so as to express the people's respect. The worship of the Tide God in the Sea Temple on the 18th day of the eighth lunar month shows that the rituals are very complicated and solemn. The main features are: 1. Choose an auspicious time and set up the altar; 2. Prepare the sacrifices, offerings, incense and candles; 3. The auspicious time has arrived, and the master of ceremonies will preside over the ceremony; the ceremony begins, chanting the sacrificial text, and everyone bows to the Tide God; 4. Invite the Tide God to come out for a parade; the Tide God goes to the seawall; 5. Everyone holds the sacrifices in their hands and moves to the seawall; perform folk performances such as dragon dance, lantern dance, lake boat, and lotus ring; 6. When the high tide reaches the bottom of the Zhenhai Tower, all kinds of incense and candles, three kinds of animals, etc., are thrown into the river to wait for the tide; 7. At the west end of the high tide, the Tide God returns to his position. The ceremony ends. During the sacrifice period, the scene is very grand, and tens of thousands of onlookers are crowded. At the same time, it is widely spread among the people in Haining that the common people go to the Dragon King Temple to pray for rain and worship the gods, fishermen must worship the sea before going out to sea to fish, commonly known as "asking for favorable winds", and worship the tide before starting the construction of seawalls. The worship of the tide god has been included in the fourth batch of Zhejiang Province's intangible cultural heritage list.