expression, noun
age-based hierarchy; seniority order
A fixed expression referring to the traditional Confucian-influenced social order where elders are respected and given precedence. Often used in discussions of social norms or etiquette.
See also: 長幼
長幼の序をわきまえることは、日本の伝統的な美徳の一つだ。
Observing the order of seniority is one of Japan's traditional virtues.
He grew up in a family that values the hierarchy based on age.