mastermind a scheme
It is a Chinese idiom, Pinyin is y á oy à m á OSH à n, which means to give advice. It comes from Sun Li's xiuluji GengTang reading notes (1).
Idiom explanation
It's a metaphor for making plans. It's the same as "goose feather fan".
The origin of Idioms
"ZHUGE Liang in novels and dramas has formed a fixed image among the masses for hundreds of years, that is, the character of the so-called badminton fan."
mastermind a scheme