The 'tenno (great emperor)' is the name of the supreme god of space in ancient China and has a deep relationship with Taoism thoughts, and also during the administration of Emperor Tenmu the Taoism influence was accepted, which supports the theory that the Emperor Tenmu started using the notation of tenno.
「天皇（大帝）」は中国古代の宇宙の最高神天帝の名で、道教思想と深い関わりを持つが、天武の施政には道教的色彩が認められ、天武が天皇表記を用い始めたとする説を補強している。