a piece of junk

Under the nose - niú kǒu zhī xià

a blood feud - xuè hǎi shēn chóu

heave great sighs - ài shēng tàn qì

a target for all - zhòng shǐ zhī dì

Xiaohui - hǎo xíng xiǎo huì

put a round peg in a square hole - fāng ruì huán záo

You should not be arrogant - guì bù zhào jiāo

mighty generals - hǔ tóu yàn hàn

pay attention to minor things - xún zhī zhāi yè

take advantage of an opportunity that comes one 's way - jiàn jī ér xíng