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This book is purely fictional: Because the astronomical telescope received an unknown alien signal, the coordinates of the earth were exposed, and alien creatures almost successfully invaded. When teleporting to the earth, all alien creatures were destroyed when encountering unknown energy. At the last moment, the core technology was thrown out of the spacecraft in the hope that intelligent creatures would inherit civilization. Earthman Owen asked the steward of civilization to recognize him as the master, and he counterattacked from then on.