Based on a common geographical environment, the people of East Asia share a similar sense of the seasons and have been sharing the seasonal festival traditions for many years, which to a certain degree has brought commonality to their experience of heritage. The seasonal festival traditions in East Asia have a localized form of expression and common features.2) They all attach importance to seasonal nodes such as the Mid-Autumn Festival, Half of July, April Eight, and the Twenty-four Solar Terms. They value family ethics in the practice of festivals and share Confucian, Taoist, and Buddhist cultural traditions, with emphasis on “red-hot sociality.” As they collectively enjoy seasonal festivities, they continue creating arts-related activities around these festivals and transmitting their heritage values to the younger generation. East Asia's practices of seasonal festival traditions are both a manifestation of cultural diversity and cultural sharing. This presentation will discuss the sharing, sustaining, and collaborative safeguarding f East Asian Seasonal Festivals as ICH.