M: Yes, for example, your earth is a civilized area located in the physical world. Due to limited conditions, there are very few civilized areas in the physical world, but there are many in the true spiritual world. There are countless large and small civilized areas. The civilized area is a place where all beings can take part in studies and exams, so the gods call the civilized area a campus. Every civilized area has its own sun, and under all the suns there are just those things, nothing new. Yi: Why is this? M: There are two main reasons. The first reason is that the nature and original desires of all spirits are just the same. When encountering the same situation, they will almost all respond in the same way. Isn't it easy for things to repeat themselves? For example, the desires of all sentient beings can be summarized into three categories: security, happiness, and dignity. If there is not even the fourth, what else can be new? All living things do nothing more than express these three desires under various conditions. Yi: What about the second reason? M: The second reason is that all civilized zones use the same scripts, so what happens is pretty much the same. If we explain it in terms of school districts, it means that each school uses unified textbooks, and the questions that all the spirits encounter are the same. Is it easy to understand? Yi: Okay, I understand. But why should the development of civilization follow a script? M: Because heavenly beings set up civilized zones with clear goals, they are not just letting all the spirits run around and play around. Especially in a campus like the physical world, where the connection between spiritual matter and matter is extremely difficult, a huge amount of resources must be invested to maintain it. If there is no unified teaching material, and all the spirits are learning randomly in it, how can it be done? So we have to follow the syllabus, or in other words, the script. Yi: Since it is so difficult to open a campus in the physical world, why do we still need to do it here? M: In the physical world, the functions of the soul will be most restricted, so it can be tempered and tested to the greatest extent. The gods arranged the most important assessment in the physical world. Let's put it this way, if you can be reincarnated as a human being in this life, it is the decisive battle for the college entrance examination! Because it is not easy to maintain civilization in the physical world, each period of civilization on the earth is very short, generally only about ten thousand years, which is equivalent to the third semester of high school. After the long elementary school, junior high school, and high school, the life forms of the souls continue to upgrade, and finally reincarnate into humans, enter the third year of high school civilization period, and start the college entrance examination. Sprint, through the upgrading of primitive, slave, feudal, capital and other social forms, as well as the changes in your various identities and circumstances in reincarnation, pass the exams one by one, one subject by one, and one by one, like a big wave scouring the sand, and only then can you be promoted to a heavenly being!