 The stories outline the Buddha's biography and illustrate his acquisition of the perfections (pāramitā), with a strong focus on generosity (dāna).According to 17th and 18th century Burmese tradition, the stories may have originated in 15th century Lan Na (modern Northern Thailand).According to Damrong Rajanubhab, the stories were first composed in Chiang Mai between 1467 and 1667.