Lin Yu traveled through the Warring States Period, and the young man who migrated from Xianyang City to Mu Lixin became the innovative think tank behind Shang Yang's reforms. He helped Qin strengthen the country with knowledge beyond his time, but chose to join the iron-blooded battlefield. From infantry to commander-in-chief, he created formations and strategies, and used the strategy of "diplomacy far away and attack near" to defeat the alliance of the six countries. Destroy Han and Zhao, destroy Chu and Wei, and return all the cavalry to Qin. In the end, the world was unified, and this young man who migrated to the woods merged the past and the present, and became a legend of the times with his unparalleled achievements.