自费
zìfèi · HSK 7
at one's own expense
💰 自 = self + 费 = fee/expense, so paying the fee 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.
费 — 弓 bow + 弗 (phonetic 'fú/fèi')
费 is a phono-semantic compound. The bottom 贝 (cowrie shell, ancient money) gives the meaning 'cost/expense,' while 弗 on top supplies the sound. Originally it referred to spending money or wasting resources, and today it means 'fee,' 'expense,' or 'to consume.'