Why?
First, to be a great calligrapher, you must have a high degree of understanding. Treacherous court official must be a very clever person, and his understanding must be extremely high.
Second, to be a great calligrapher, you must study hard. A big traitor should have a strong ability to find a job. Putting this ability into calligraphy is a science.
Third, calligraphy is a delicate work, which needs careful thinking. A big traitor must be careful and thoughtful.
Fourth, to be a great calligrapher requires hard work and perseverance. Great traitors are persistent people. They set their goals and persevere.
Cai Jing: It's called Master Cai. There were four calligraphers in the Northern Song Dynasty: Su, Huang, Mi and Cai, and Cai was Cai Jing.
Qin Gui: "Castle Peak is fortunate to bury loyal bones, while white iron casts innocent ministers". Qin Gui is famous at home and abroad for his loyalty to Yue Fei. The prints we commonly use now are imitation of the Song Dynasty, as the name implies. The founder of Songti is Qin Gui.
Yan Song: People call Yan Ge Lao. He has been giving orders for decades. etc
Officialdom is like a battlefield. Either you die or I die.
Secondly, the so-called traitor is just that he is in power. It is no exaggeration to say that no matter who he is. It's just that he will become a powerful minister when he takes office (just another way of saying it)