It's Hard to Find the Way of Rats, but It's Hard to Cultivate Immortality

Reborn as a mouse, he is worse than an ant in the world of immortality. Until I encountered the true face of the wandering "immortal". He used a child to make elixirs, and his hypocrisy is destructive. Is the path to immortality dead? Then I will start my own way! He refines elixirs, and I steal a breath of elixir energy to analyze its secrets; while he cultivates Taoism, I steal a ray of Taoist rhyme to gain insight into the weak points of his skills. He regarded me as a funny beast and fed me waste elixirs containing highly toxic substances. Little did he know that my rat body contained a human soul and overwhelming unwillingness. Every time I devour him, I am tempering his "poison" into my unique fangs of revenge. Wait until the day when these fangs are sharpened I will use this body that you regard as dirty to tear open the hypocritical face of this immortal way and chew up the throat full of benevolence and righteousness!