It's good to speak ill of others. What idioms can such a person use?

Basic explanation and detailed explanation

Pretend: think of yourself; Fan: Ordinary. Think you are different and better than others.

Qing Pu Songling's Strange Tales from a Lonely Studio: "Mr. Dahongyang has ripples; When he was young, he was a famous Confucian in Chu. Pretending to be extraordinary. "

arrogant

Basic explanation and detailed explanation

Yelang: a small country in the southwest of Han Dynasty. Metaphor is ignorance and arrogance.

Qing Pu Songling's Strange Tales from a Lonely Studio (Volume 6): Driving a Cannon Car in a Crazy Cloud; So there was the arrogance of Yelang; Rely on the wolf's anger; People respect Hebo. "

self-righteous

Basic explanation and detailed explanation

Yes: right. I always thought I was right. Describe subjective, not open-minded.

Xunzi Honor and Disgrace: "Anyone who fights will be self-righteous and take others as the fault." Mencius with all his heart: "Everyone is happy with it and thinks he is self-righteous."