Let’s draw the conclusion first: aliens and humans may have a considerable degree of similarity. Let us first assume a premise that all living things, including aliens, have an evolutionary process. “Observation, thinking, practice, and communication” greatly increase the possibility of intelligence generation, so that it may be necessary. Moreover, the aliens of the Spiritual System of the Lingsheng Sect are ignored here. This will have several basic characteristics: 1. Photosensitive organs. The organ cannot violate the principle of optics, it must have a certain size so that light can be imaged, and it must have a transparent medium. It grows on the higher part of the body to reduce the probability of being blocked, and multiple ones can judge the distance. The information brought by vision is far greater than hearing, taste, smell and touch. Having “eyes” can bring huge advantages to survival and competition. Moreover, if you want to evolve into an intelligent creature, you must have a large amount of observation ability and obtain enough information, and then it is possible to reason and imagine. 2. Finely manipulated organs. Move freely where the eyes can see clearly. After reasoning and imagining the results of the observations, it must be practiced, otherwise the exercise of wisdom cannot be completed. Even the advanced aliens, as long as they also evolved from low-level creatures, must have “hands.” 3. The ability to communicate. For the time being, I think that intelligent creatures must be collective creatures. A monkey can eat crabs, and a group of monkeys will do. The ability to communicate greatly enhances the strength of “wisdom”, and of course it is more conducive to the evolution of high-level wisdom. 3.1 Language and hearing. Outside the body, reduce the clutter from yourself. That is, the ability to feel and create vibrations in gases and liquids (not excluding solids). In terms of the amount of information, sound cannot be compared with light, but in many cases, light will be blocked or refracted, and the sound accuracy is higher, which is applicable Sex is better. 3.2 Pheromone and taste and smell. Although I think this ability is very natural, it is not necessary for the generation of wisdom. That is, the ability to sense and send out small doses of substances has the highest accuracy rate, low amount of information, and high delay. 3.3 Text, body language and vision. The first article has already talked about the eyes, but the focus here is different. Obviously, light has the largest amount of information and the lowest delay. If it has spectral capabilities, the accuracy is also extremely high. Alien creatures are likely to be much better than humans in this respect. First of all, human beings do not emit light by themselves, and secondly, the ability to read light information is really limited, “like the sky full of stars, although it is vividly visible, it is still innumerable.” 4. Brain. Although it does not necessarily grow on the head like human beings, I think the brain is still very necessary. It should be an integrated brain, because if it is scattered into several places, the brain will turn slowly and the internal communication loss will be large. 5. The ability to move. No matter how you look at it, animals are easier to evolve wisdom than plants. In summary, aliens like a pile of mud, a tree, and a grain of rice are unlikely to exist. They may be very different from humans, but if they want to evolve and preserve wisdom, they cannot grow too outrageous.