The seventh prince, Li Xuan, was the most inconspicuous member of the Great Xia Dynasty. When the iron hooves of the Northern Barbarians broke through the country, the voices of peace in the court were loud, and the empire was in turmoil. In a desperate situation, a system called [National Games Chess Game] unfolded before his eyes. Food shortage? A chess game of "Tuntian Policy" resulted in thousands of acres of fertile land being created out of thin air. A crushing defeat? In a round of "surrounding Wei and rescuing Zhao", strange soldiers from thousands of miles away went straight to the enemy's nest. When Li Xuan used chess as a sword to cut off internal and external troubles, he discovered that this was more than just a game of saving the country. There are people who play chess among all the countries, and the whole world is just their ultimate chessboard. I, Li Xuan, take the fate of the country of Daxia as my son, and vow to create an everlasting future for this majestic Chinese state!