进出口
jìn chū koǔ · HSK 7
import and export
📦🚢 进 enter + 出 exit + 口 mouth/port = goods entering and exiting a port = import and export
进 — walk radical 辶 + well 井
Originally a semantic-phonetic compound: the walking radical 辶 gives the meaning of movement, while 井 (jǐng, 'well') supplied the sound. The traditional form 進 used 隹 (short-tailed bird) suggesting forward flight; the simplified 进 swapped 隹 for the simpler phonetic 井. The core meaning 'to advance, enter' has stayed stable.
出 — foot 止 emerging from enclosure 凵
出 is a pictograph showing a foot or plant stepping out of a hollow or enclosure, depicting the act of going forth. The original sense of 'coming out' or 'emerging' has remained stable since oracle bone script. It now broadly means 'to exit, go out, or produce.'
口 — pictograph of an open mouth
口 is one of the oldest pictographs in Chinese, originally drawn as a simple outline of an open mouth. Its core meaning 'mouth' extended naturally to 'opening' or 'entrance', as in 入口 (entrance). It also serves as a common radical in characters related to speech, eating, or apertures.