The Xen Dong festival, known as the forest worship ritual, of the Thai in Nghia Lo town in the northern province of Yen Bai, has been recognised as a national intangible cultural heritage.

On the 12th day of every lunar new year, the Thai people celebrate the Xen Dong Festival, known as the "forest worship" ritual, to honour their ancestors and seek blessings for the village's peace, prosperity and happiness.