I Will Retire from the World of Martial Arts Forever

Travel through the world of martial arts. Chen Xiao awakened the proficiency panel. He thought he would be able to prove his status forever like others, but his appearance was that he would never be able to quit again! As long as you practice the exercises incorrectly, you will practice them incorrectly forever. Others have practiced hard for three years and gained +100 proficiency. He practiced hard for three days and his proficiency level was -1. Seeing his skills regressing every day and no longer improving, Chen Xiao finally despaired. [Qi Accumulation Technique (0/100) → Gas Leaking Technique (-1/100)] The next moment, the true energy in Chen Xiao's body leaked out crazily, turning into a three-foot-long sword and cutting off the century-old locust tree in the courtyard. "?" Chen Xiao realized it. From the "Pure Heart Curse" to "The Sound of Chaotic Demons", from "The Art of Raising the Sword" to "The Technique of Sacrificing the Sword", from "The Disintegration of the Demon" to "Returning to the Truth Against the Pulse". Many years later, when the leader of the Demon Cult saw Chen Xiao's "Rejuvenation Technique" that drained people's blood instantly, he was so frightened that he knelt down and begged for mercy: "Devil! Do you call this an authentic and upright method?!" Chen Xiao's face was full of grievance: "I am really a decent person! I just... Regressed a little bit!"