be tarnished by comparison
The Chinese idiom, Pinyin is Xi ā NGX í ngsh ī s è, which means that it is insufficient compared with similar things. It's from Qin Mu's where cactus grow.
The origin of Idioms
Qin Mu's "in the place where cactus grow in clusters" said: "cactus finally appears in such a stubborn character and outstanding style that makes ordinary plants look pale."
Idiom usage
It has a derogatory meaning
Analysis of Idioms
To be dwarfed by
be tarnished by comparison
Two peaches kill three scholars - èr táo shā sān shì