Unpaid wages
It is a Chinese idiom, w è if é nx ǐ x ī n in pinyin. It means to remove firewood before fire, which means to prevent fire. From Yu Shi Ming Yan.
The origin of Idioms
Feng Menglong's Yu Shi Ming Yan of Ming Dynasty Volume 39: "all the Privy Council officers are afraid of things. They only know that if they are eager to dig a well, they will not be paid?"
Idiom usage
Used as a predicate or attributive; used to prevent beforehand.
Examples
Do things must be prepared in advance, not paid.
Unpaid wages
serious and facetious at the same time - yì zhuāng yì xié
feel uneasy even when eating and sleeping - qǐn shí bù ān
Return the original to the original - huán yuán fǎn běn
Give up everything for a long time - bǎi shè chóng jiǎn