Meaning of bù xíng:
不行
won't do; be out of the question; be no good; not work; not be capable
Zhège zhǔyì bù xíng.
这个主意不行。
This idea won't do.
Nǐ xiànzài qù shì bùxíng de.
你现在去是不行的。
It is out of the question for you to go now.
Tā shuō tā shēntǐ bù shūfú, suǒyǐ jīntiān shàngbān bù xíng.
他说他身体不舒服,所以今天上班不行。
He said he wasn't feeling well, so going to work today is no good.
Zhè tái diànnǎo zěnme dōu bùxíng.
这台电脑怎么都不行。
This computer just doesn't work.
Jīntiān wǎnshàng chūqù wánr bùxíng, wǒ děi xuéxí.
今天晚上出去玩儿不行,我得学习。
I can't go out to play tonight, I have to study.