Oh No, the Chancellor Isn't Plotting a Rebellion

Xu Zhaoyun transmigrates into a book with a System and becomes a princess of Jin, as well as a great general who protects the country, beloved by everyone. She hasn't even had two seconds to enjoy the princess treatment when the System assigns her a task: marry the great villain, or die. Easy. Everyone in Jin knows that the chancellor, Zheng Kangcheng, is young and handsome, wields great power, and is in close contact with spies from a neighboring country. To catch a tiger, you have to enter its lair. Xu Zhaoyun goes to great lengths to threaten and tempt Chancellor Zheng Kangcheng into coming home with her. On their wedding night: System's friendly reminder: Princess, the chancellor isn't the great villain. Xu Zhaoyun is at a loss for breath. “Well, since there's still time to fix this, why don't we just go our separate ways?” Zheng Kangcheng raises an eyebrow. “Why?” Xu Zhaoyun: “Well, we're not right for each other. You're too patriotic, and I only like great heroes who rebel.” Zheng Kangcheng: “That's easy. Tomorrow, I'll overthrow this country for you.” The emperor: “...??? What did I do wrong?” System: “It's all my fault. I'll change the rules of the game, okay?”