An Sholdon is the transliteration of two Tibetan words which means "the Yoghurt Banquet"in Tibetan. The festival is for eating yoghurt and opera festival .In ancient times pious folks went into mountain hermitages for penance, and on the last day of which Yogurt was served for meal followed by entertainment of folk songs and daces. Since 7th century, opera performances were held for days in Norbu Lingka. Presently, opera contests and distribution of prizes are held for seven days.