Fantasy: a Cornucopia of Worlds, Return on Investment and Upgrades

Ji Changsheng traveled through the fantasy world and became an ordinary outer disciple of the Tianling Sect. I thought that as a time traveler, I would cheat my life, but I didn't know that my talent was mediocre, I couldn't make any progress after practicing for more than ten years, and I was about to be expelled from the sect! At a critical moment, he awakened a system called the Cornucopia of All Realms, and all the items invested in it can be upgraded and returned! You invest in a first-grade Qi Lianping Powder, and you will receive a fifth-grade True Spiritual Pill when you upgrade! You invest in a remnant of the elixir of immortality! Upgrade to return the true dragon elixir! You invest in a fragment of the Broken Double Eye! Upgrade to return perfect innate double pupils! You invest in a fragment of the broken technique! Upgrade to return the complete Immortal Level Skills and the Human Emperor Sutra! ....... Many years later, Ji Changsheng suddenly looked back and found that he had reached the top of the world! He looked towards the Immortal Sect and stood holding the Emperor Sword! The double pupils bloom with immortal imperial power! The geniuses of the immortal world were shocked into silence! "If there is an immortal in the sky! Can he compare with me?" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.