自助
zìzhù · HSK 7
self-service
🍽️ 自助 = self (自) + help (助); self-help, so a self-service buffet where you serve yourself
自 — pictograph of a nose
自 originally depicted a human nose, shown frontally with the bridge and nostrils. Ancient Chinese pointed to their own nose to mean 'me,' so 自 shifted to mean 'self' or 'oneself.' A new character 鼻 was later created to carry the original 'nose' meaning.