This is the biggest traditional festival of the year for ethnic minorities in Ham Yen district held on the 9th of January (lunar calendar) every year at Dong Tien National Monument, Yen Phu commune with wishes a good rainy year, good harvest and promotion of traditional agricultural products. The ceremony includes a ceremony at the village tutelary temple, procession of incense offering and the fortune-telling ceremony for many near and lucky tourists. The festival becomes more exciting because there are more interesting activities such as: Visitors will enjoy unique cultural features through traditional festival customs, folk tunes, cultural activities ... In addition, the festival also has folk games and national sports such as: playing chess, blindfolded to catch goats, spinning, playing volleyball and fighting goats ...; In addition to enjoying the fantasy beauty of Tien Tien Cave, visitors can also participate in mountain climbing, horn-dance, landscape painting ...

At Dong Tien Festival, visitors can also attend the Fair of the district with famous products of the district such as: Ham oranges, essential oils, soaps made from oranges; Cham Chu Ba mountain of Seven Deo mountain, belonging to the Dao Tiền ethnic group, Minh Hương commune distilled from the enamel of Cham Chu forest leaves; sipping dried buffalo meat in Yen Phu commune, specialty processed from Minh Huong gourd duck; Lam rice from glutinous rice and eight fragrant rice of Phu Luu and Minh Huong; dishes of specialty field carpets of Nhan Muc; mistletoe of the Red Dao people in Minh Khuong commune ...; Tourists can also buy valuable medicinal herbs of ethnic minorities in Bach Xa and Minh Dan communes, forest honey in Yen Thuan, Minh Khuong, Bach Xa and Thanh Long communes; croissants, mannequin vegetables, pickled pork, brocades ... as gifts.

Dong Tien - Ham Yen Festival has contributed to preserving the traditional beauty and cultural identity, is an attractive destination for visitors, experiencing life and learning about the land of people here every spring. .