I Have Become an Immortal! Did This Break the System?

[Relaxed and funny style] + [System nonsensical] + [Invincible flow] The foundation was built at the age of three, the golden elixir was established at the age of five, the Nascent Soul was condensed at the age of nine, and he became an immortal at the age of eighteen! Did you tell me there is a system? A late system, a cheating mission. Lin Xuan is the only immortal in this world, and his immortal life is bleak~ Xianyu Xianzun was forced to open for business~