Scrap Material? I Just Don't Want to Be Too Good

Lin Fan traveled to the world of immortal cultivation and awakened the [Low-key System]! The more you are looked down upon, the more generous the reward will be! After three years of being a good-for-nothing outer disciple of the Tianjian Sect, I acquired countless god-level skills and magic weapons! Senior Sister: "Junior Brother Lin Fan is so pitiful, his cultivation talent is so poor..." Senior Brother: "As good as he is, he will never enter the inner sect in his whole life!" Head Master: "This boy's qualifications are dull and useless..." Lin Fan was submissive on the surface, but he was swiping rewards in his heart: [Ding! Being ridiculed as a waste, he was rewarded with the heaven-level skill "The Ancient Dragon Elephant Technique"! Ding! Being underestimated for his strength, he was rewarded with the god-level magic weapon Chaos Sword! ] Until one day, the demon sect attacked and the sect was in crisis... Lin Fan: No more pretending, I'm showing my cards! One sword opened the sky, shocking the world! Everyone: How the hell is this useless material? He is clearly a hidden boss!