Son of Heaven
Son of Heaven, or Tianzi (Chinese: 天子; pinyin: Tiānzǐ), was the sacred imperial title of the Chinese emperor. It originated with the ancient Zhou dynasty and was founded on the political and spiritual doctrine of the Mandate of Heaven. The secular imperial title of the Son of Heaven was "Emperor of China".
The title, "Son of Heaven", was subsequently adopted by other East Asian monarchs to justify their rule.
The Son of Heaven was the supreme universal emperor, who ruled tianxia (means "all under heaven"). His status is rendered in English as "ruler of the whole world." The title, "Son of Heaven", was interpreted literally only in China and Japan, whose monarchs were referred to as demigods, deities, or "living gods", chosen by the gods and goddesses of heaven.