Meaning of bái chī:
bái chī
白痴
Noun
idiocy; idiot
tā de xíngwéi jiǎnzhí jiùshì báichī.
他的行为简直就是白痴。
His behavior is simply idiotic.
Tā zhēn shì gè báichī, wánquán bù míngbái zhège jiǎndān de wèntí.
他真是个白痴,完全不明白这个简单的问题。
He really is an idiot, completely unable to understand this simple problem.