The System Misjudged Me: I Just Turned 18, and I’m Already an Immortal Emperor?

[Rating manipulation + spiritual qi revival + crushing all opposition + invincible + no goody-two-shoes] (Also known as A Single Punch Kills a Thug, and the System Says I'm Slaying a God; The System Came a Year Early, and I've Already Become Emperor in the High Martial World) [Ding! Congratulations, Host! Your domineering presence is unmatched! You have forcefully subdued the yandere succubus campus belle. Reward: Divine-Demon Body Tempering Art!] Ye Tian patted the campus belle on the head, looking utterly bewildered. What the heck? You call this subduing her? [Ding! Congratulations, Host! You fought alone in the Demon Cavern and emerged victorious! A single shake of your mighty frame successfully won over thirty vicious demonesses. Reward: Great Might Heavenly Dragon!] Ye Tian emerged from the foot bath shop leaning against the wall, silently swearing that next time he would make the demoness beg for mercy on her knees! [Ding! Congratulations, Host! You displayed astonishing might, suppressing a group of peerless young prodigies with your invincible bearing. Reward: Supreme Bone!] Ye Tian stood there clutching a rice ladle, staring at the little kid wailing in front of him. He was completely dumbfounded. That works too? A year later, spiritual qi revival would begin, but the System had already bound itself to him. Animals turned into demons, plants gained sentience, and humanity suffered devastation, living in misery and peril. Ye Tian frantically raised his cultivation over the next year, becoming invincible in the world! Through the System, he discovered that many rare treasures of the future were still unclaimed! A divine beast at the pet shop, waiting to be adopted. Even an ordinary dragon fruit was a priceless treasure of the future. A stone picked up off the ground turned out to be the legendary dragon bone. Then, as spiritual qi fully revived, evil gods descended, feeding on flesh and souls and seeking to slaughter all living beings! Ye Tian stepped forward, standing with his back to everyone. “My Blue Star, I’ll protect you!” One punch! The starry sky shattered, and the Great Dao was ground to dust!