供不应求
gōng bù yìng qiú · HSK 7
supply does not meet demand
📦 供 supply + 不 not + 应 meet + 求 demand = supply can't meet demand
Four-character idiom built from its parts: 供 (gōng, supply) + 不 (bù, not) + 应 (yìng, meet/respond to) + 求 (qiú, demand). Literally states that supply fails to answer demand — used when goods sell out or resources run short.
供 — person radical 亻 + 共 (together)
A semantic-phonetic compound: 亻 (person) gives the meaning of human action while 共 (together, gōng) supplies the sound. Originally meaning to present or offer jointly, it extended to 'supply, provide.' A second reading gòng means to make an offering or confess.
不 — single pictograph; bird flying upward
Originally a pictograph in oracle bone script, traditionally interpreted as a bird flying up toward the sky and unable to come down, suggesting negation or refusal. Over time it became the standard negation word in Chinese, used before verbs and adjectives to mean 'not'.
应 — 广 (shelter) + 心 (heart) + 隹 (bird)
Originally written 應, this character combined a phonetic component with 心 (heart) to suggest 'responding from the heart' or 'answering a call'. The simplified form 应 keeps the top portion. Over time it broadened from 'respond/answer' to also mean 'should' or 'ought to'.
求 — pictograph of a fur garment
求 originally depicted a fur coat or pelt, with hairs hanging from the sides. It was later borrowed phonetically to mean 'seek' or 'request,' and the original 'fur' meaning was taken over by 裘. Today 求 almost always means to seek, beg, or pursue.