Transmigrated as the Unrelated King

A modern man accidentally transmigrates and becomes Zhang Cheng, the unrelated king of the Great Yan Dynasty. Shouldering the heavy responsibility of saving Yan from war, he only wishes to return to his original world to enjoy a hundred million yuan demolition payment. To this end, he risks his life and even pretends to commit suicide. However, he not only becomes the prince consort of Princess Lan but also gains the support of a magical reputation system. Facing barbarian invasions and court conspiracies, Zhang Cheng navigates both the palace and the battlefield with ease. When appointed as the Border Guard General, he refuses the title and leads his army into the capital to challenge imperial authority. Can Zhang Cheng save his life while completing his mission to return to the modern world?