The intangible cultural heritage is without borders but it has owner and sovereignty because the heritage is associated with people, their residence, and practice (Le Thi Minh Ly 2020). Hence, Émile Durkheim (1912), a French social anthropologist, in his famous book of the Australian tribal religious life, convincingly argued that the study of festive events was an essential element to understand people’s social life. He wasprobably the first scholar to conceptualize festivals as central social events in the life of “primitive societies”. Cau ngu festival recreates the traditional cultural space of a coastal fishing village, customs as well as traditional rituals, games and knowledge of the fishermen. In addition, the festival expresses people’s aspiration of an age-old philosophy of living in harmony with the sea, maritime spiritual beliefs and cultural nuances to be preserved and promoted in our life.