Idioms about the sun, menstruation and day

Idiom: The sun and moon pass through the sky, and the rivers move over the earth

Pinyin: rì yuè jīng tiān, jiāng hé xíng dì

Explanation: The sun and moon pass through the sky every day, Rivers flow forever through the earth. A metaphor for the eternity and greatness of people or things.

Idiom allusions

Source: "Book of the Later Han Dynasty·Huan Tan Feng Yan Zhuan": "It is so obvious that the sun, moon, sky, rivers and seas are not comparable.

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