King of Thousand Machines and Soldiers: I Will Give the First Emperor the Immortal Body at the Beginning

My name is Xiao Jin, the king of modern soldiers retired with his right arm disabled. While trading on the underground black market, he accidentally came across fragments of the imperial seal. Under the moonlight, a bronze door appeared out of thin air. Behind the door was Xianyang of the Qin Dynasty two thousand years ago. Qin Shihuang looked at my rifle: "Is this a divine arm crossbow?" I unlocked the holster with my backhand: "No, Your Majesty, this is payment for knowledge." When the bullet flew past Zhao Gao's hat, the entire Xianyang Palace fell to their knees. Half a year later, the Qin cavalry charged in the smoke, and the mysterious flag of Qin was planted all over the mountains and rivers of the Six Kingdoms. But in the modern world, someone discovered my secret—when a black market boss pointed his gun at my forehead. I smiled: "Do you know that King Qin is checking the hydrogen bomb in my laboratory right now?"