The Hung Kings are considered the symbol and founder of the Vietnamese nation. The worship of the Hung Kings is a type of folk belief that has been passed down for a long time, has an important position in spiritual life, and carries deep spiritual values ​​of emotion, self-esteem and national pride.

According to legend, Lac Long Quan - the son of Kinh Duong Vuong Loc Tuc married Au Co - the daughter of King De Lai and gave birth to a sac of one hundred eggs, which hatched into one hundred sons. After that, fifty sons followed their mother to the mountains, fifty sons followed their father to the sea to make a living. The eldest son followed his mother to Phong Chau land (now Phu Tho Province) to establish the Van Lang country and was honored as King Hung. Van Lang was the first state in the history of the Vietnamese people, ruled by 18 kings. The Hung Kings taught people to grow wet rice and chose Nghia Linh Mountain, the highest mountain in the region, to perform rituals according to the beliefs of agricultural residents such as worshiping the rice god and the sun god to pray for favorable weather, good crops, and the growth of all things. To remember the great contributions of the Hung Kings, the people built a memorial temple (Hung Temple historical relic site, Phu Tho Province) with Nghia Linh Mountain as the center and took the 10th day of the third lunar month every year as the death anniversary of the ancestors. The worship of Hung Kings originated from the worship of ancestors, one of the special beliefs, holding a very special position in spiritual life and is one of the elements that create the unique cultural identity of the community of Vietnamese ethnic groups. The worship of Hung Kings is the highest expression of the worship of ancestors, expressing the unique cultural identity of the Vietnamese community, which is gratitude to the Hung Kings and the ancestors who built the country. In the minds of the Vietnamese people, Hung Vuong is the founder of the Vietnamese nation. With respect and gratitude to Hung Vuong, the Vietnamese community voluntarily worshiped Hung Vuong, turning the worship of Hung Vuong into a belief, a cultural symbol creating a tradition of solidarity, love, support and overcoming all difficulties and challenges to build and protect the Fatherland.
Currently, throughout Vietnam, there are 1,417 relics worshiping Hung Vuong, Phu Tho province alone - the ancestral land related to Hung Vuong has 345 relics worshiping Hung Vuong and characters of Hung Vuong era. The worship of Hung Vuong was recognized by UNESCO as an intangible cultural heritage of humanity on December 6, 2012. This is to promote the unity in cultural diversity of the Vietnamese ethnic community.