It's easy
No expense is an idiom. Its pronunciation is B ù f è izh ī Hu ì, which refers to giving others benefits at no cost. It comes from volume 10 of the second quarter of the story.
explain
Refers to the benefit gained in vain.
source
Idiom example: one towel or two knives of manuscript paper, we can't get anywhere? Give it to him. It's easy! ——Lao She's four generations in the same hall
Discrimination of words
Degree of common use: General emotional color: commendatory words idiom structure: more formal generation time: Ancient
usage
Used as a subject or object; used in writing
It's easy
one 's sincerity moves even the sucking pigs and fish - xìn jí tún yú
Though the day of death is the year of life - suī sǐ zhī rì,yóu shēng zhī nián