In the last years of Daning, the world is about to collapse.
If there are alien tribes outside, war will break out; if there are gangs inside, gangs will be rampant and cannibalism.
Lu Chen, who had traveled through time, woke up and became a poor boy who was dying of illness in Mouse Alley, Anning County. At home, he only had his sick mother, his sister, and a lamp that could never be extinguished.
Outside the door is the debt-collecting Black Snake Gang, and outside the alley is the chaotic world of cannibalism; after nightfall, there are still unexplained spooks and appearances hiding in the dark.
If you want to live, you can't kneel or beg, you can only practice boxing.
Fortunately, Lu Chen is pregnant with the Gray Mark.
Others had to struggle for several years before they could reach the threshold of Black Tiger Fist; he could hide his skills by relying on the gray seal. Others struggled day and night and were still trapped between the skin, flesh, muscles and bones; by practicing martial arts, fighting, and breaking evil spirits, he was able to forcefully push the martial arts, and boil the martial arts into his flesh and blood layer by layer.
Black Tiger Fist, Tiger Evil Golden Body Kung Fu, Heaven-Suppressing Prison God Limiting Heart Technique...
Grinding the skin, strengthening the flesh, and forging the bones, starting from a pair of rough fists, he gradually trained himself into a fierce body capable of overturning troubled times.
Evil spirits knock on the door, gangs block the alleys, aliens march south, red lights illuminate the night, and hundreds of ghosts borrow their help.
Others fear him like ghosts and gods, but Lu Chen only believes in one thing——
The punch is heavy enough, the bones are hard enough, the blood is hot enough, and the killing is ruthless enough, nothing can cross the line under his feet.
This is the story of a young man who traveled through time and space, used his gray seal to advance his kung fu, and used his body to overturn troubled times. He killed gangs, crushed evil spirits, suppressed alien races, and gradually became invincible in the world.