Li Yan, a loser from the history department, traveled through time after being drunk and became the eldest son of Qin Prime Minister Li Si. When he opened his eyes, he was taken to Zhangtai Palace for molesting the first emperor's favorite concubine and maid. After ridiculing the enfeoffment system in public as "not as good as playing card decentralization", he unexpectedly discovered that Qin Shihuang was coughing up blood and had a secret illness. He offered a prescription of penicillin to save his life, but was thrown into death row as a remnant of an alchemist. In prison, he invented bamboo fiber toilet paper to bribe the jailer, and used the "Currency War" theory to persuade Li Si to be released on bail. This started the road to demonic reform of the Qin Dynasty.
While he pretended to indulge in wine and sex, he used magnet lipstick in the brothel to eavesdrop on the conspiracies of the six countries; while he improved the Quyuan plow to raise the price of grain, inducing Hu Hai's customers to hoard grain and make a thunderstorm. While racing a Hun princess, he deliberately fell off a cliff, but drew a world map in a cave: "Does the Chanyu know that there is Rome to the west?" He also took advantage of the construction of Epang Palace to secretly carve evidence of Hu Hai's crime of treason with the enemy on the beams and pillars. When Li Si discovered that his son was smelting steel privately, he laughed and threw out the annotated version of "The Book of Shang Jun": "Dad's method must use the water mill of the 21st century."
On the sand dune night, Qin Shihuang, on his deathbed, clenched the jade in his hand and said, "Fu Su Ren Ruo... You come to be Huo Guang!" However, Li Yan tampered with the imperial edict to "pass the throne to Fu Su", introduced Hu Hai and Zhao Gao into the Lishan underground palace, and used methane explosions to create the illusion of divine punishment. At the enthronement ceremony, he burned hundreds of classics in public, but revealed the "New Interpretation of Qin Code" printed with movable type among the ashes. At the last moment, Princess Tian Wan'er of Qi pointed her sword at his throat: "You destroyed my homeland, but you said you want to build a global village?" He smiled and held the edge of the sword: "It is better to build a home first." In the firelight, the world map on the interlayer of the national jade seal slowly unfolded.
