The Reborn Khan: Starting with the Liberation of Slaves

This novel has no System, no golden finger, and involves a soul transmigration to another world. After leaving the military, special forces soldier Liu Jianguo refuses to settle for an ordinary life. He goes through a string of careers, including library director and wilderness survival streamer, then dies of rage while watching a historical romance drama in his old age. After his soul transmigrates to another world, he works himself to the bone day and night to establish a great enterprise. But what is going on with his superhuman physique and ageless appearance? Where did the long-eared folk around him come from? Are his tools, weapons, and armor technology or magic?