Daxia: Your Highness, Stop Pretending, I Know You Are a Peerless Master

Traveling through Daxia for more than ten years, I thought my status was low, and I just wanted to become the richest businessman in Daxia and create an industrialized Daxia. The daughter of the prime minister is my wife, and the most talented woman in the world came to propose marriage... Until the Emperor of Great Xia exposed my identity. Am I actually still the eldest son of Daxia? In order to preserve the royal bloodline, I actually want to have an heir?