Eight-Year-Old Immortal Sword Immortal: Become Invincible from the Skill of Drawing a Sword

[Eight years old + sixth age + demon-killing certificate of immortality + deduction of skills + krypton life + upgrade] "My name is Li Yi. When you hear this name, the demon is already dead..." Upon waking up, Li Yi traveled to this world where monsters eat people. By killing demons, you can gain longevity, which can be used to deduce martial arts. From [Sword Controlling Technique] to [Ten Thousand Swords Returning to the Sect] From [Wind and Thunder Sword] to [Blade Storm] From [Tiangang Jue] to [Sword Opening the Heavenly Gate] From [Xiaoyao Jue] to [Other Transformation and Freedom Dafa] Li Yi would also wonder, why does this lifespan increase with use? One day, the restricted area revived, the demon king came, and the gods came to the world. Just when the Daxia Allied Forces were resisting to the death, Li Yi stood up in the sky alone. I don't know where this is, I don't know who I am, I just know that I'm going to go on a killing spree! Killing tens of thousands of demons with one sword, the whole world was shocked! Li Yi raised his head and looked outside the Nine Heavens. He heard that there were many holy kings there, and there were even ancient demons from outside the territory causing trouble. Any one of them has a lifespan of ten thousand years, or even hundreds of thousands of years. This time I fly into the sky and use the sword in my hand to borrow some longevity energy from the immortal emperors to prove my path to immortality. This book is also known as "Krypton Life Martial Arts: Become Invincible from Demon Slaying", "Who Let Him Slay Demons", "Is He Considered Weak for Slaying Demons at the Age of Eight?" Destroy the stars with one backhand punch" "Starting from slaying demons, Gan becomes a true king of martial arts"