The protagonist is worried every day

Wu Qianzong never thought that a salted fish with no dreams could have any special achievements or experiences, but he met something unusual. At the beginning of the story, he had a dream and went to different worlds. In those worlds, he was a ghost in the night and a strong man sweeping zombies and humans in the end of the world, He has also become a mortal in the mysterious fairy world who is bent on seeking Tao. Everything is true and false. He doesn't know where to go in the end, but he will go on