The festival is one of the most unique and significant spiritual-cultural activities of the White Thai ethnic group. It takes place annually on the full moon day of the second lunar month, marking the beginning of a new farming season. The festival is to pray for abundant harvests and to educate younger generations about their roots and the harmonious relationship between humans and nature.

Offerings prepared by local residents include typical local products such as bamboo-tube rice, grilled fish, boiled chicken, sticky rice, eggs, bitter bamboo shoots, along with decorative items like birds and cicadas woven from bamboo strips. These offerings reflect the villagers’ sincerity and respect toward heaven and deities.

The ritual is conducted by a shaman, with villagers gathering to pray. The shaman recites prayers to inform Then (the heavenly deity) of the villagers’ hardships due to the lack of rain and to ask for rainfall to nourish crops and fields. At the end of the ritual, Then is believed to grant water to the village, bringing favourable weather and good harvests for the year.

Following the ritual, to celebrate the granting of rain, local Thai people and visitors join in festive activities, including traditional games, accompanied by the lively sounds of drums and gongs, and participate in the “xoe” dance of solidarity.

Maintaining this festival helps preserve the traditional spiritual and cultural values of the White Thai community while creating a unique tourism product that attracts many visitors to Moc Chau.