https://en.wikipedia.org/wiki/Son_of_Heaven
Son of Heaven, or Tianzi (Chinese: 天子; pinyin: Tiānzǐ), was the sacred monarchical title of the Chinese sovereign.It originated with the Zhou dynasty and was founded on the political and spiritual doctrine of the Mandate of Heaven.Since the Qin dynasty, the secular imperial title of the Son of Heaven was "Huangdi".. The title, "Son of Heaven", was subsequently adopted by other ...