Explanations in Buddhist scriptures include the stories of the Sun-Faced Buddha and the Moon-Faced Buddha.
The Sun-Faced Buddha and the Moon-Faced Buddha practiced enlightenment at the same time and obtained the righteous body of cause and effect.
However, the Sun-Faced Buddha gained a life span of 1,800 years, while the Moon-Faced Buddha only had a golden body for one night.
Conception: