Scientists from the Sheep Kingdom believe that the earth can basically recover its ecology after three hundred years, while the remaining people on earth will basically become extinct in almost two hundred years. At that time, the sheep people returned to the earth, and the world belonged to the pure sheep people. What the scientists of the Sheep Kingdom did not expect was that the humans on Earth had mutated in size and became more tolerant of hunger in order to cope with the lack of food. Their lifespans were shortened and sexual maturity was extremely advanced. The continuation of the population through rapid iterations made it even more difficult to establish a pure Sheep Kingdom earth world.
Also, the people of the Sheep Kingdom have lived in space for a long time, and they have also undergone unexpected changes. Their bones become brittle, like sticks that break in the mouth, and their muscles become weak, which means that women's childbirth is more dangerous. Contrary to the people on Earth, people in the Sheep Kingdom mature later and later, with an average age of sexual maturity of fifty years, which also means that they can live longer than people on Earth. Women's pregnancies are also getting longer and longer, reaching a staggering three years. Even so, the infant survival rate is very low. The population of Sheep Kingdom is inevitably showing a downward trend. By 2273 Earth time, the number of residents in the space city had dropped by nearly two million. The remaining new extraterrestrial humans with a population of 3.5 Million are only less than 600,000, and the rest are all the original veteran residents of the space city from the earth. Although the president of Yangguo has promulgated new laws on marriage and childbirth in Yangguo, and it is illegal to refuse to get married and have children, and the best penalty is ten years in prison, it has had little effect. For long-lived animals, ten years is like the blink of an eye. Young women would rather go to jail than risk pregnancy.
