I Reached the Top of the World by Marrying a Princess

Shen Wannian accidentally traveled back to Dafeng. He invented soap with the help of modern knowledge. He originally wanted to become a free and wealthy man by relying on the soap business. Unexpectedly, he was accidentally involved in a royal dispute. He wanted to run away and live in anonymity for the rest of his life. Unexpectedly, he unexpectedly met the princess and gained love. He had no choice but to help the prince win the throne, marry the princess and reach the peak of his life!