天经地义 tiānjīng-dìyì literally heaven's law and earth's principle
literally heaven's law and earth's principle (idiom); figuratively right and proper; right and unalterable; a matter of course
How to remember 天经地义: 天 day + 经 go through + 地 ground + 义 right conduct = literally heaven's law and earth's principle.
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How it is used
- Idiom: perfectly justified / a matter of course - 尊老爱幼是天经地义的事 (zūnlǎo-àiyòu shì tiānjīng-dìyì de shì) respecting elders is only right and proper.
- Asserts something is unquestionably right and natural. Written and spoken.