Use the Sky as a Prison? Then I Will Break Through This Day

When his four-and-a-half-year sentence was about to expire, Cheng Kai thought he would finally see the light of day again, but he fell into another world one second before he was released from prison and became a fool that everyone can bully. This is a world of cultivation where hard fists are the only way to make sense. Cheng Kai, who has no way of turning back, can only clench his fists and climb up - not to become an immortal, but to find a way home. But as he walked, he discovered that he not only wanted to break the shackles of cultivation, but also overturned the iron cage of class that had been solidified for thousands of years. When he stood on top of the world, a secret concerning the survival of both worlds was suddenly revealed.