
Legend has it that dragon king Lac Long Quan got married to fairy Au Co who later gave birth to a sac containing 100 eggs, from which 100 sons were born. They were believed to be the ancestors of the Vietnamese. When the couple parted, Lac Long Quan went to the south seawards with 50 of their children while Au Co went to the mountainous region with the other half.
Their eldest son later installed himself as Vietnam ’s first king Hung Vuong and named the country Van Lang. He set up the capital in Phong Chau (nowadays Viet Tri city, Phu Tho province), starting the 18 reigns of Hung Kings.
The commemoration ceremony was an activity during the week-long Hung Kings Temple festival, which is held annually to pay tribute to nation’s founders.
On the occasion, Phu Tho received a certificate of UNESCO’s recognition of the practice of Hung Kings worshipping as part of the intangible cultural heritage of humanity.