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Li Jie put on the old slippers that he found in the corner, opened the door and walked out... Sure enough, he came to the new world again, with mountains, water, grass and trees, but Li Jie knew that this was definitely not the earth. There would be no mice, chickens, ducks, cats, dogs living like humans on the earth... Li Jie looked around and saw that there was no shortage of doors, and he felt reassured. As long as he wears slippers, opens a door and walks out, he can return to the earth. After Li Jie discovered this phenomenon, he only had curiosity and expectation for the new world. Even if he was just a mouse in the new world, he did not want to live as mediocre and useless as he did on the earth.

In the 23rd century, Li Yunsheng came to Earth's colonial planet with a dream of getting rich. With his unexpected "talent", he began to improve himself and start a business.