HSK 6 HSK V7-9
Correct

反思

/ fǎnsī / 
Strokes

Definition

to think back over sth/to review/to revisit/to rethink/reflection/reassessment

Example

As a Verb

introspect; reflect over the past; search one's heart

1
Fǎnsī
反思
guòqù
过去
  
,
shì
是
wèile
为了
wèilái
未来
  
。

Reflection of the past aims at the future.