A 9-year-old girl in the third grade of primary school traveled back to the Qin and Han Dynasties. From then on, the picture of that period of history will slowly unfold before her eyes. Xiang Yu's sword, Liu Bang's sword, Han Xin's majesty, and Lu Zhi's beauty. These historical figures and historical events will be displayed one by one in front of a third-grade elementary school student. Whether she can use the wisdom of a third-grade elementary school student more than 2,000 years later to survive in this era of war, or whether she will be lost in history like a fallen leaf.