Cheng Yifeng used modern knowledge to assist the new emperor Li Yan to fill the treasury through a series of operations such as doing business, making ice, making refined salt, and manufacturing tobacco! Use poems and articles to resist the cultural invasion of foreign vassals! Save the people by controlling floods, fighting droughts, and earthquake disasters, and expand the territory through border conflicts and land reclamation! He also used food reserves, soil erosion and other methods to govern the country and save the people. In the end, he finally gained the emperor's love and importance, and at the same time, he also gained the admiration of many beauties, and finally he was able to embrace the beauty! Achieving a win-win situation for individuals and the country