God Rewards Those Who Work Hard: Something Is Not Quite Right with My Sword Immortal System

[Cultivation of immortals + system + no heroine + cool writing + swordsmanship + not invincible + decisive killing] Cheng Mo, an outer disciple of Xuantian Sect, has the lowest five spiritual roots. His cultivation path is difficult and he has become the laughing stock of his peers. However, there was an eternal flame in his heart - he swung his sword ten thousand times for three years and practiced hard. This perseverance beyond ordinary people finally triggered an opportunity that had been silent for eternity: the awakening of the "Tiandao Rewards System"! The system is not given out of thin air, but takes "diligence" as the key and "suffering" as the path: Swing the sword ten thousand times? Reward the Marrow Cleansing Pill, which will change your destiny! A near-death encounter? Unlock the remaining chapters of the Ancient Sword Classic and reveal your edge! Desperate situation to survive? Breakthrough before the battle, sword pointed at the sky! Cheng Mo thought this was a gift from God for his hard work, but he didn't know that behind this "system", there were monstrous secrets involved in the ancient war between immortals and demons, and it was closely related to the inheritance of the long-annihilated Taixu Sword Sect. A mysterious sword embryo and a sleeping ancient sword soul "Xu" guide him on the thorny road of searching for the nine remaining chapters of the lost "Taixu Sword Classic".