In June (14th and 15th day of 5th month of Tibetan calendar) an extensive puja and offering is made in Urgen Dukang(holy cave of Guru Rinpoche) in Na. It was in this holy cave that Guru Rinpoche had performed practice of Vajrakilaya and thereafter all the deities of Vajrakilaya had appeared before him. Therefore this great tsok day is being carried out every year for more than 50 years upon suggestion from lamas as an auspicious day to accumulate great merit.
On the 14th day of 5thmonth of Tibetan calendar, VajraKilayaPuja is performed and on the next day Thudup and Mahakala Puja are performed. All the villagers attend the tsok with deep faith and enthusiasm. And in the evening of the last day of tsok the villagers rejoice performing shebru dance. The tsok is sponsored voluntarily by the locals every year.