This Star Comes from the Wasteland

Su Nan had a dream, dreaming that he was fighting various monsters in the wasteland. Just when he thought it was just a dream, he traveled through time and entered the wasteland world in his dream. In this way, Sunan continued to shuttle between the two worlds, and used the culture and abilities of their respective worlds to continuously improve themselves. Many years later... Standing in front of you now is Su, the greatest artist on Blue Star, the strongest superpower in the wasteland, the dream lover of thousands of girls, Nan (Note: The author does not know much about firearms, so the weapons that appear in the wasteland world are all fabricated. The first show the protagonist participated in in the real world was a love TV show)