Correct

大材小用

/ dà cái xiǎo yòng / 
Strokes

Definition

using a talented person in an insignificant position (idiom)/a sledgehammer to crack a nut

Example

Definition

put sth big to small use—make little use of a great talent; waste a talent on a trivial job; not do justice to a person's talent; great genius in little employment

1
Ràng
让
nǐ
你
dāng
当
dǎzìyuán
打字员
shì
是
dàcáixiǎoyòng
大材小用
  
。

The job of a typist is unworthy of your talents.