to know right from wrong; to distinguish horse and deer easily

disciples and old followers

Each supplies what the other needs through trade.

At open doors dogs come in.

grind weapons sharp in preparation

call friends and scream companions(call one's companions and intimate friends)

go against the regular practice(violate the rules)

have one's eyes open throughout the night

Said of a loyal counsellor who gives admonition to the emperor in person

Bright and gentle

Zhong Ding Ding Ding

Seek advice

Selling office and prison

behave coquettishly(seduce somebody by flirting glances)

bribe both the higher and lower officials

Sell evil

A blind man holds the candle.

have a great effect(have much effect)

enlist followers

Go with the fashion