Can you recommend a cultivation novel with a security guard as the main character?

I'll recommend a novel to you that fits your question description! It was called "Covering the Sky: I Return to Earth as a Security Guard After Becoming an Emperor". It was a fantasy novel. The main character's name was Li An. He was an ordinary human who had become a Great Emperor by chance. Later, he returned to Earth to be a security guard, but he had an unremarkable cultivation. The novel described his growth in a cruel world, as well as his adventures as a security guard on Earth. I hope you like my recommendation. Muah ~