Rebgong Lurol Festival, known as Lurol to the Tibetans and Nadun to the Monguors, is an annual summer gathering during the sixth lunar month, featuring ritual performances and feastings. The festival has a history of more than 1400 years. It is held in 22 Tibetan and Monguor villages on both sides of the Longwu River basin in Tongren County from 17th to 25th of the sixth-month lunar calendar. The festival is a grand folkloric activity with great characteristics, wide participation, and prehistoric flavor. It features diverse rituals, deities, entertainments, and dances that bring the grand festival to its full display of magic and joy.

During the festival, Lhapa (deity men) perform deity/spirit trance mediums and host the entire event. The festival dances are mainly consisted of Lhatze (deity dance), Lutze (naga dance), and Magtze (military dance). The dances are performed in different villages. The most distinctive dances are the three blood sacrifice rituals: cheek piercing, back-skin piercing, and forehead bleeding. The official performers of the dances are the men and unmarried girls of the villages.

There are two stories related to the origin of the Lurol Festival. The first one goes that during the reconciliation of Tang-Tibet, the local Tibetan generals worshipped local guardian deities from the 17th to 25th of the sixth lunar month and made grand sacrifices to celebrate peace. This has consequently developed into the Lurol Festival. The second story goes that during the late Yuan and early Ming dynasties, a mixed Chinese Mongolian army of the Yuan dynasty accepted the Ming dynasty's invitations in the Longwu River valley and was relieved of their armors to work as farmers in the area. While celebrating the peace and tranquility, they held a grand ceremony to pray for the elimination of disasters and evil, and abundant food and long life. The ceremony became the Lurol Festival.

Lurol Festival is a cultural and spiritual phenomenon with strong prehistoric religious traditions and complex cultural practices and meanings. It has diverse programs and a warm and solemn atmosphere. The deity/spirit offerings are unique to Rebgong. Its rituals feature burning incenses, inviting the deities, worshipping the deities, offering sacrifices to the deities, singing and dancing to entertain the deities, and farewelling the deities. On May 20, 2006, the Lurol Festival was enlisted in the "First List of National Intangible Cultural Heritage" by the State Council.