Time Travel! Married the Prime Minister's Daughter and Slept in the Same Bed as Me

A straight engineering man dressed up as the crown prince of Northern Liang who was raped, poisoned, and treated as a waste. Faced with the stunning concubine who despised him, the second mother who coveted the throne, and the Northern Liang army who was about to make a move in the court - he took out blast furnace coke, trigonometry, queuing theory, and took barbarian princesses, sect saints, and enemy female spies into his room. He just didn't like women.