Zhou Yan, a graduate student in the Department of Archeology, triggered the Beidou Mechanism in the Mausoleum of the First Emperor, and when he opened his eyes, he became Hu Hai, the second emperor of Qin who was reviled by history books. Under the appearance of madness with corpse poison in his body, he glimpsed the secret code of the Six Kingdoms hidden by Zhao Gao's "referring to a deer as a horse", and even awakened the Mohist treasure "Mo Ju" in the Lishan Underground Palace - this stone embedded with "Tiangong Kaiwu" and "Fei Gong" AI The bronze box hides a truth more shocking than the Twelve Golden Men: the straight road of the Qin Dynasty coincides with the quantum entanglement map, the rammed earth of the Great Wall is mixed with anti-shock nano-ceramics, and the mirage ship Xu Fu traveled eastward is carrying the iron smelting technology of the Japanese country to backfire on the Central Plains. In order to break the deadlock, he used the name of madness to conquer Bai Yuan, the daughter of the powerful son of the Mohist family. When the Thousand-Ji Umbrella bloomed in the palm of the mute woman, the white tiger of the mechanism trampled Xianyang Prison to pieces, and the movable type printing wrapped in "Qin Laws and Comments" burned the hegemony of the bamboo slips of the aristocratic family. They used marsh gas to light the Huns' beacons, used concave mirror arrays to burn the Japanese Baqi fleet, and under the Chi You sword held high by Xiang Jui, they used triangular arrows to blast Zhang Liang's primitive gunpowder. It wasn't until Bai Yuan jumped into the core of Xuanji City that he was shocked to realize that all of this had already been written into the clouds of pottery figurines on the interstellar navigation station: the so-called time travel is just the ninth level of the puzzle sown by higher civilizations.