I know nothing about it
In Chinese, Pinyin is Li ǎ or á NW ú w é n, meaning not heard at all. From a dream of Red Mansions by Cao Xueqin in Qing Dynasty.
The origin of Idioms
The 29th chapter of a dream of Red Mansions by Cao Xueqin in the Qing Dynasty: "I often mention this" gold and jade ". If you don't hear about it, you can see that you treat me seriously, but you don't care about it."
Idiom explanation
Be clear about; be clear about. I didn't hear it at all.
I know nothing about it
about some insignificant matters - zhēng cháng jìng duǎn
Rolling melons and flowing water - gǔn guā liú shuǐ
can run in both directions unblockedly - chàng xíng wú zǔ