sǐ-suè序細

someone from a younger generation

someone from a younger generation; junior; youngest among people of the same generation

English Wiktionary, “序細” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E5%BA%8F%E7%B4%B0 · confidence: High (Wiktionary, PH/Quanzhou/Jinjiang)