In a World Where Everyone Practices Supernatural Powers, I Am Rubbing Immortal Magic in My Hands

Earthling Jiang Yuan no longer remembers how many worlds he has traveled through in total. He practices again and again. He skips unnecessary time by fast forwarding. It only takes a few months to kill the boss and travel to another world. The cycle starts over and over again... It wasn't until he slayed the evil dragon in a fairy world that he once again came to a modern world dominated by superpowers. He originally planned to play the game for three days and three nights, but he was suddenly informed by the system that this would be his last "trip". This time, there was no time limit, and there was no fast forward available... After returning to normal life, he decided to rely on his cultivation experience and knowledge from various worlds to survive in this crisis-ridden world.