Starting from a Grocery Store

[Fictional world, fictional history, martial arts myths, traveling through the heavens, cultivating immortals and immortality, grocery stores] Cheng Xin, who was fed up with the working life of a cow and horse, resolutely quit his job in a big city and returned to his hometown in a small county town. He inherited the long-abandoned grocery store from his ancestors and planned to spend the rest of his life here peacefully and useless. However, his fate completely changed after he inherited the grocery store. A grocery store that didn't know where it came from or when it was born, spanned countless latitudes, time, space, and universes, and finally merged with Cheng Xin's grocery store. From then on, Cheng Xin started his leisurely life of selling goods across the world. Since then, such a saying has been circulated in all major time and space worlds "There is such a shop in the world. It can be found anywhere in the world. It stores anything the world wants. Whether it is the elixir of immortality that mortals want, or the method of enlightenment that gods want, it is all available here..."