for the right reasons
The Chinese idiom ch ū sh ī y ǒ um í ng means that there is a legitimate reason for the expedition. It's from Jiang Xianghe.
The origin of Idioms
The first scene of Peking Opera "Jiang Xiang He": "if Zhao presents Bi, he is afraid of our country, so it's not difficult to submit; if he doesn't offer it, he will go to the war again, and then he will become famous."
Analysis of Idioms
Synonym: a famous teacher; antonym: a nameless teacher
Idiom usage
As an object or predicate; used in military affairs, etc.
for the right reasons
be in a leisurely and carefree mood - xián qíng yì zhì