In 1999, facing the crisis of population, resources and environment, human society finally achieved unity in order to usher in a new era, established the Earth Federal Government and issued the Human Universe Migration Plan. After that, in order to ensure the stability and peace of the earth circle, the Earth Union Army was formally established in 2009. In 2045, the construction of the No. 1 space colonial satellite began, and then many colonial satellites were built one after another, and it was divided into seven regions from SIDE1 to SIDE7 according to the cosmic domain. When mankind began to emigrate to the original satellite, human history entered the cosmic century, and the era was changed to the cosmic century (U.C) 2001, when the total population of the earth broke through the 9 billion mark. In U.C.0027, the first permanent lunar city, von Braven, was completed, and by 0040, 40% (about 5 billion people) of the total population had emigrated to the universe. In 0045, the asteroid Yuno entered the lunar orbit and began to operate periodically and steadily, later known as Luna Ⅱ (LUNAR2). In 0050, the total human population has reached 11 billion, of which 9 billion are cosmic immigrants. However, the Earth federal government has not formulated to ensure that the universe.