Martial Arts and Spirituality: Starting from the Swift Wind Sword Technique

Bai Xuan traveled through time. Travel to a world where martial arts are respected and demons are in chaos. But he was just a gang member, helpless, until he discovered that killing the enemy could gain him training time. He could gain as much time as the opponent had practiced, and the training time could be directly poured into martial arts. ... Many years later, Bai Xuan looked at those aloof beings who were like gods: "I wonder how many years they have been practicing?"