No pollution
Chinese idiom, Pinyin is è ch é NW ú R ǎ n, which means not affected by bad habits. From Ye Shengtao's poverty.
The origin of Idioms
Ye Shengtao's poverty: "children are lovely, innocent and spotless."
Idiom usage
Subject predicate type; used as object and attribute; used in people or social atmosphere, etc
Analysis of Idioms
Synonym: spotless
No pollution
be neither too familiar nor too distant - bù jí bù lí
be injured in the sinews or bones - shāng jīn dòng gǔ
a single spark can start a prairie fire - cuò huǒ liǎo yuán