捕风捉影 (捕風捉影) bǔ fēng zhuō yǐng

bǔ fēng zhuō yǐng set phrase chasing the wind and clutching at shadows
Domain: Idiom 成语
Notes: Figuratively, groundless accusations or to act on hearsay evidence (CC-CEDICT '捕風捉影'; Guoyu '捕風捉影')