Pretending to understand

kill the chicken to frighten the monkey - shā jī xià hóu

ill-gotten gains - fēi fèn zhī cái

An oath from the sea - bǎi zhōu zhī shì

infringe justice - wéi tiān bèi lǐ

have a guilty conscience - zéi rén xīn xū

brute courage - yī rén dí

from one who is dear to him - yuǎn bù jiàn qīn

major issues issues of right and wrong - dà shì dà fēi

Attack the flaw and ask for the stain - gōng xiá suǒ gòu

do according to one's ability - liàng lì ér xíng