Start by Slaying Demons and Conquering the World

In a world of chaos with demons and monsters, human lives are like grass. A mortal's life span is no more than a hundred years. It takes thirty years to practice a boxing technique, and another twenty years to practice a palm technique... Fortunately, Zhang Ji also has a golden finger. Spend your lifespan and deduce martial arts. Every time you kill a monster, you can take away the opponent's remaining life span. Those old demons who have lived for thousands of years have become his mobile blood packs one by one. From [Demon Subduing Fist] to [Xuan Yuan Hua Zhen Fist] From [Iron Armor Body] to [Xumi Town Life Body] Killing and killing, Zhang Ji asked why the longevity yuan was used more and more?