Anthropology Professor Charles F. Keyes advises, "In recognition of the deep-seated meaning of certain traditions for the peoples of the societies of mainland Southeast Asia, the rulers of these societies have incorporated some indigenous symbols into the national cultures that they have worked to construct in the postcolonial period. Giving the "Bun Bang Fai or fire rocket festival of Laos" as one example, he adds that it remains "…far more elaborate in the villages than in the cities….