Correct

我行我素

/ wǒ háng wǒ sù / 
Strokes

Definition

to continue in one's own way (idiom)

Example

Definition

persist in one's old habit; stick to one's old way of doing things; do always as one pleases

1
Tā
他
bù
不
yuàn
愿
tīng
听
biéren
别人
quàngào
劝告
  
,
wǒhángwǒsù
我行我素
  
。

He would not listen to anyone; he took his own course.

2
Jǐnguǎn
尽管
lǎoshī
老师
yīzài
一再
jǐnggào
警告
  
,
kě
可
tā
他
háishi
还是
wǒhángwǒsù
我行我素
  
。

In spite of the teacher's repeated warnings, he went his own way.