In the World of Immortality, the Invincible Hero Enslaves the Holy Dragon.

A veterinarian travels through the world of immortality, and the low-level monks have a bad life. Cultivation is difficult and the path to immortality is elusive. He tried his best to refine the elixir, but he was poisoned and died soon. By chance, he traveled through time again and came to the magical world. This is a world of invincible heroes, knights, wizards, elves, undead, devils, warcraft, dragons, magic, artifacts... This world is full of monsters, abundant resources, countless treasures, and powerful creatures that are comparable to gods, but they cannot cultivate souls. The veterinarian waved the spirit-refining elixir, and the tyrannical beasts squandered gold coins like dirt, attracting countless creatures to seek refuge, even the holy dragon bowed his head and became his mount. In the world of immortal cultivation, faced with a large group of golden elixir ancestors, the vet couldn't stand it anymore, so he silently put on the Dragon King's divine power, took out a pile of scrolls, slow, weak, and crazy, chain lightning, thunderous bombs... And finally pulled out the Doomsday Blade...