Correct

不痛不痒

/ bù tòng bù yǎng / 
Strokes

Definition

lit. doesn't hurt, doesn't tickle (idiom); sth is wrong, but not quite sure what/fig. not getting to any matter of substance/scratching the surface/superficial/perfunctory

Example

Definition

superficial; perfunctory; of no substance

1
Fǎnfǔ
反腐
bìxū
必须
dòngzhēngéde
动真格的
  
,
bù
不
néng
能
bùtòngbùyǎng
不痛不痒
  
。

We must be in earnest about the anti-corruption campaign, and not just go through the motions.

2
Gǎo
搞
de
得
bùtòngbùyǎng
不痛不痒
  
,
jiù
就
bùdérénxīn
不得人心
  
。

If we scratch the surface only, we'll lose the support of the people.

3
Shuō
说
xiē
些
bùtòngbùyǎng
不痛不痒
de
的
huà
话

make some perfunctory remarks