The Mohist Lord of the Warring States

Wang Lei, a residential compound security guard, woke up to find that the fire axe had smashed through the armor of a Qin soldier from the Warring States period, not a burglar.

When modern security know-how meets a battlefield of cold steel, lodestone can trap armored soldiers, explosives become "electromagnetic pulses," and even the principles behind a residential compound's access-control system can be turned into deadly traps. He joins forces with disciples of the Mohists to blow up granaries and destroy warships, crushes Qin encampments with steam-powered tanks, and deals with the Black Ice Terrace assassins under Lu Buwei as if they were neighborhood thieves.

But when the stone gate of the Mount Tai ruins slowly opens, he realizes that this mess is deeper than the compound's septic tank. Mozi turns out to be an astronaut from 2077. The fire axe in his hand can split bronze masks, while the half of a smartphone in his arms holds the secrets of the transmigrators' alliance and the coordinates for going home.

Lu Buwei's firearms, the Mohists' spaceship key, Zhao Ji's resolve, Mo Chen's secrets... As the roar of a spaceship engine echoes across the Warring States, Wang Lei grips his axe: either blast his way through time and space to go home and clock in, or turn this chaotic age into a new residential compound.

After all, there's nothing an axe can't solve. If that doesn't work, just throw in another bomb.