MTL - Princess Medical Doctor - ~ 942 guidance, gains and losses

When he stayed at her home and one night, he took her body in a drunken stupor. From then on, he had been a constant fixture in her life. How adamant he was in forcing a marriage was how adamant she demanded for a divorce. “I’m not staying married to you! I’m not staying married to you! I’m not staying married to you!” After she repeated such an important proclamation three times, he finally tossed her the divorce paper. She thought she had finally escaped him alas… After the divorce, he still snuck into her room every night… Finally losing her patience, she yelled, “We are already divorced!” He glanced at her and set down the divorce paper before her. On it, it was written clearly: After the divorce, the car is hers, the house is hers, the company is hers, their child is hers, he… is also hers?

“She was originally a demon. How could she be led evil after meeting a human like me? Those critics always say some ridiculous things.”

In 1798, during an interview with a reporter, Cardinal Ranchi was asked about his past with the exiled princess of the last descendant of the Demon Clan and the recent signs of the Demon Clan’s recovery. He said:

“I have made too many efforts to safeguard world peace. I am convinced that under her leadership, there will be no chance of the demons returning to the country.”

…

In the winter of 1802, the demons successfully restored their country.

[Based on the above materials, please identify who is the main war criminal who led to the return of the demons, and explain why it is Lan Qi. (10 points)】

——Selected from “Classic Collection of Imperial History Unified Examination Questions”

- Description from novelbuddy

"In her previous life, she is used by her first love to send her own company into the tiger's den. She becomes bankrupt, gets kicked out of the house by her father, and becomes the target of ridicule by the family. Worst of all, she believes her best friend's lies, thinking that everything was done by her ‘husband’. Under her best friend's ploys, she almost kills him and is ultimately sentenced to prison, where she dies of depression.

After rebirth, she, who used to be a top international spy, becomes the eldest daughter of the Fengs, a fat girl who is ugly and foolish in the eyes of the ordinary people.
Mastering Royal 18 Saber Moves and Purgatory 9 Palms, she rose to fame with the martial arts of Demon Cook.
Upon an imperial edict, she was ennobled as the wife of Lord Cen, and then suffered various intrigues and plots…
She proved herself to be a real overmatch and a true genius to the world…