Before I Became an Immortal, I Raised Bamboo Horses by Picking up Garbage

My name is Lu Xing, and I sell steamed buns in a small town. The day the Tianlinggen Fairy Boy next door detected the spiritual roots, I was making noodles and a black stone fell into the basin. Later, I became the most useless Wulinggen in the world of immortality, and was assigned to sweep the mountain gate. The master at the top of the mountain looked at him coldly: "With your qualifications, you are only qualified to use this rubbish stone." Later, when there was a battle between good and evil, I crushed the black stone, and thousands of phantoms of immortals and demons appeared behind me. Among thousands of people kneeling, only the bamboo horse from the past came back against the light and cut off the chains around me with a sword: "Lu Xing, you stole my stone, when will you return it?" I looked at the black stone in his hand that was exactly the same as the one I broke, and suddenly smiled. It turns out that what I stole was the natal heart stone of the last fallen demon immortal in this world of immortality.