Correct

死心眼儿

/ sǐxīn yǎnr / 
Strokes

Definition

stubborn/obstinate/having a one-track mind

Example

As an Adjective

stubborn

1
Tā
她
zhège
这个
rén
人
tài
太
sǐ
死
xīnyǎnr  
心眼儿
  
。

She is very stubborn.

As a Noun

person with a one-track mind