费唇舌

shì yǐ rú cǐ wǒ jiù bù bì duō fèi chún shé

事已如此，我就不必多费唇舌。

If that's what things have come to, I needn't waste my word any more.

bié gēn tā fèi chún shé le

别跟他费唇舌了！

Don't waste word on him!