What idioms are there about Chinese studies?

A trace of Jiuding: still saying a thousand words. I am very picky.

Nine changes and ten changes: Jude words change endlessly.

Begging for mercy: Begging for sympathy.

Give, take, live and kill: The "Eight Commanders" in Zhou Li Tianguan and Dazai have the power to give, take, live and punish (blame). After that, "taking life and killing" generally refers to the power of the emperor to reward and punish life and death.

Connecting the preceding and the following: connecting the preceding and the following.

Walking on the grass: wearing starlight on your head, stepping on the grass. Describe the hard work of going out early and returning late.

Clean and neat: fast and thorough, not slow.

Outside the cloud nine: a metaphor for a very high and far place.

Wet behind the ears: the smell of milk on your body is still there. Laugh at people's naivety and ignorance.

Begging for pulp to get wine: metaphor income exceeds demand.