However, it may be related to the origin of the Yuki-den building (the chigi (ornamental crossbeams on the gable of a Shinto shrine) in the sotosogi (the ends of the chigi are terminated with a vertical cut) form just like in the Gegu (outer shrine) of Ise-jingu Shrine), and the Suki-den building (the chigi is in the uchisogi (the ends of the chigi are terminated with a horizontal cut) form, just as in the Naigu (inner shrine) of Ise-jingu Shrine) of Daijo-sai festival.
しかし、大嘗祭の悠紀殿（千木は伊勢神宮外宮の様に外削ぎ）、主基殿（千木は伊勢神宮内宮の様に内削ぎ）の起源とも関係している可能性がある。