ㄖㄨㄢˇchīruǎnㄅㄨˋㄧㄥˋchīyìng

吃软不吃硬
  1. 比喻可以接受他人溫和勸說要求屈服脅迫

lit. eats soft food, but refuses hard food (idiom)​, amenable to coaxing but not coercion