Correct

匪夷所思

/ fěi yí suǒ sī / 
Strokes

Definition

unimaginable/outrageous/freakish

Example

Definition

(of ideas or actions) unimaginably/incredibly queer; fantastic; bizarre

1
Tāmen
他们
de
的
yángé
严格
fěiyísuǒsī
匪夷所思
  
。

They are fantastically strict.