Chu Xuan transmigrated into the world as the heir of Prince Langya. He gave everything to help his fiancee earn glory on the battlefield.
But on the very first day she was named the General Who Could Topple a Nation, she called off their engagement, claiming she had no feelings for Chu Xuan, and said she would marry someone else.
Only then did Chu Xuan see his fiancee for what she really was: an ungrateful snake who bit the hand that fed her.
From that moment on, Chu Xuan decided he would no longer endure humiliation. He stepped out of the prince's manor and proclaimed himself the Lord of Langya, Guardian of the Nation. He outsmarted the emperor and his ministers at court, and routed the world's heroes until they fled in disarray.
In the end, his former fiancee was stunned by Chu Xuan's power. She knelt outside the manor, kowtowing and begging for his forgiveness.
This is a fantasy novel set in a dynasty, featuring a protagonist with demonic-level intelligence, peerless martial prowess, and a ruthless nature.