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This is a hard science fiction story that mainly takes place in a lunar city in the 2860s, a top-secret interstellar voyage adventure. "Do you believe that humans can find the secret to longevity? Do you believe that we can achieve eternal life?" "Perhaps we can find the legendary longevity world in the galaxy through long voyages." This is an era when the average life expectancy reaches 150 years. This is an era where people live mainly controlled by robots. This is an age of united government of mankind; This is humanity's great first alien contact plan; This is a romantic story that has been circulated among human beings and is known mainly to women and children in the lunar city; This is the earliest and largest aerospace immigration expedition recorded in human history; This is a cultural communication that brings advanced quantum artificial intelligence, 3D printing new industrial system, mysterious universe (a world where spiritual realm technology and singularity social technology are integrated) and new human civilization to open up a new world. It is a poetic pursuit of eternal life and eternal youth; it is also the only life-saving straw for the five major longevity schools. However, this is also a tragic life journey for the male protagonist who will never look back. It is also a eulogy for the heroine's great personal struggle spirit. In the final analysis, it is a tragic and grand interstellar migration. It just happened out of everyone's expectation. It shows that there is nothing new in history. The evolution of human civilization has always seemed very slow in history.