Industrial Cthulhu: Starting as an Island Lord - Chapter 9: Underwater Breathing

An orphaned boy with dreams of making it big through being a blacksmith is given a once in a lifetime chance to succeed when he's taken in by an odd pair - Eggor and Ella. While former teaches him the arts of craft, the latter teaches him the mysticism of cultivation, granting him two paths to tread in this life.

Frank, a mercenary known for his cold ruthlessness, decides it’s time to leave the bloody world of the underworld behind. But the underworld has no plans of letting him go. Relentless enemies from his violent past keep hunting him, and eventually, they succeed—Frank is killed.But fate has other plans. Instead of staying dead, he is mysteriously reincarnated into the body of a cop in a world filled with crime, corruption, and dark secrets. With the help of a strange, all-knowing system, Frank is given the chance to live again—this time, to prevent crime before it happens.

Coincidentally, indoorsy-guy Zhang Yang went to the cultivation world, being the lowest level of zombie. By using a manual book named: “ Tai Yin Refining Figures”, Zhang Yang find his own way to success and leaves a “If a zombie knows how to use a manual, nobody can stop it “ legend in the world.

- Description from Novelupdates