any words can not defend themselves
The Chinese idiom, Pinyin is B ǎ IC í m ò Bi à n, which means it can't be explained with any words. It's from the postscript of quasi fengyuetan.
The origin of Idioms
Lu Xun's zhunfengyuetan · postscript: "the accused are under the trend of the times and are unable to argue, which is more confirmed by the reactionary debate."
Idiom usage
It's hard to say how to describe. You should always be suspicious. I don't know what to say.
any words can not defend themselves
confirmed habits are hard to get rid of - jī zhòng nán fǎn
Be meticulous in speech and smile - yán xiào bù gǒu
Put one's heart into consideration - shè xīn chǔ lǜ