Which bad emperors and treacherous officials in history have high artistic attainments?

Bad king:

Chen, the backyard is in full bloom.

Yang Guang, Emperor Yang Di of Sui Dynasty, was very clever.

Li Yu, queen of the Southern Tang Dynasty, praised ancient and modern ci,

Kim Wang Hailing Yan Hongliang, Nian Nujiao? Snow,

Song Huizong and Evonne, thin gold painting theory,

Treacherous court official:

Qin Gui, calligraphy.

Cai Jing, calligraphy.

Yan Song, article.

Small Shenyang, calligraphy.

Ruan Dacheng, opera