In the Age of Discovery, as the highest-level civilization in the known galaxy, human beings became the masters of the entire galaxy. In order to satisfy the greed of human nature, space colonization has become the only choice for those with political ambitions and interests. People send out countless automatic detectors towards the Milky Way, wandering around the Milky Way aimlessly. Once they find a living planet, they will fall directly on it and transmit the coordinates of the universe back to the controller. Search for planets with signs of life, transform them through artificial means, enslave the lower life forms on them, and station human colonial armies. According to the properties of the planet, transform it into different types of colonies for residence, breeding, resources, etc., So as to satisfy the desires of human careerists. When interstellar colonization became an important period in human development, a very important professional planet appraiser was born, also known as "pioneer".
