Chang Han took a nap and opened his eyes again, and he actually traveled to the world of beasts. By chance, he used the knowledge he learned on earth to survive in the interstellar world through patents. With a small oil bottle, and with the help of friends and various benefits from the empire and the federation, he opened a bookstore in the world of beasts. From then on, he went to a good life with no worries about food and drink, and a lot of young people behind him. He gained fame and fortune, and at the same time he found a partner, and once again entered the ranks of winners in life.