I Was Invincible Long Ago

The male protagonist Ye Changqing came to the world of cultivating immortals. He originally thought that he would be able to have plug-ins in the system like other protagonists of cool novels, but because he had no spiritual roots, he could not become even the most ordinary cultivator of immortals. He had no choice but to live in a small town near the sect and open a grocery store to make a living. Until one day five years later, his small shop overnight became a holy place that big guys from all over the world yearned for. Even the dog he raised became the demon king that everyone feared. From then on, Ye Changqing became a peerless master in the eyes of everyone and became a new legend in the world.