lit. heaven's law and earth's principle (idiom); fig. right and proper
天 · 4 strokes
Depicts a person (大) with an emphasized head. Based on the original meaning "head". The meaning later shifted to "top", "high", and "sky".
经 · 8 strokes
Simplified form of 經. Originally written 巠, which depicts weaving vertical (warp) threads on a loom. The 纟 (thread) component was added later. Based on the original meaning "warp thread". The meaning…
地 · 6 strokes
Phonosemantic compound. 土 represents the meaning and 也 represents the sound.
义 · 3 strokes
Adapted from the cursive form of the traditional character 義. Phonosemantic compound. 羊 represents the meaning and 我 represents the sound. In ancient China sheep (羊) were associated with goodness and…
父母照顾孩子是天经地义的事，不需要任何理由。
It's perfectly natural and justified for parents to take care of their children; no reason is needed.