Based on the belief that the female menstruation cycle was the same as the rotation cycle of the sun, the philosophy of the Ezo people taught that everyone born by a woman embodies cosmic principles and receives benefits from the sun.
なお、蝦夷の哲学とは、女性の大虫の周期が日の自転周期に一致する事から、その胎から生まれたなん人にも宇宙の理が備わり、日の恩恵を受けているという考え方。