应运而生 (應運而生) yìng yùn ér shēng

yìng yùn ér shēng set phrase emerging to meet the needs of the time / to rise to the occasion
Domain: Idiom 成语
Notes: In this idiom, 应 is used in the sense of 'corresponding to', 运 in the sense of 'fate', and 生 in the sense of 'arising' (CC-CEDICT '應運而生'; CCI p. 32; Guoyu '應運而生')