English translation of '苦口婆心'
(kǔ kǒu pó xīn)
do one's best to persuade
⇒ 父母苦口婆心地劝他,他就是不听。(Fùmǔ kǔ kǒu pó xīn de quàn tā, tā jiùshì bù tīng.)
His parents did their best to persuade him but he just didn't listen.
Translation of 苦口婆心 from the Collins Chinese to English Dictionary