return a favor in folds

[saramehr]

hi, teacher

whats the meaning of return a favor in folds

People say you must return a favor in folds

;-):up:so thanks

 

[Shenfeng]

*not a teacher*

I guess what's meant is that favors should be reciprocated twofold, threefold, maybe fourfold..., meaning that you should be willing to do even more to help the one who helped you.

By the way, where did you learn this phrase?

 

[saramehr]

a movie