The huge "rock" has been cleared out little by little, and it is only a part of what is currently revealed, and it looks like a small mountain compared to the ants.

At the beginning of the excavation, the protagonist cannot see the whole picture, and can only see that it is roughly an irregular elliptical sphere.

What attracts him the most is the countless symbols on it, which are composed of various straight lines, curves, points, etc., and the traces of artificiality are obvious, which is absolutely impossible to be a miracle of nature.

Among them, there are many graphic symbols that the protagonist does not recognize. But there are many, although there are no language annotations, or they don't use the kind of numeric and alphabetic annotation symbols that he understands, but their characteristics are very obvious, so that he is very familiar with them after nine years of compulsory education, and they can be recognized at a glance.

In addition to the Pythagorean theorem, there is a double helix curve, and there are many short horizontal lines connecting the hyperbola, which clearly symbolizes the double helix structure of DNA!

The double helix structure is a common basic unit in biological structure, and the significance of the double helix model not only means that the structure of the DNA molecule is probed, but more importantly, it also suggests the replication mechanism of DNA, which shows that the base order of the two strands is complementary to each other, as long as the base order of one of the strands is determined, the base order of the other strand is also determined. Therefore, only one of the chains needs to be used as a template to synthetically copy the other chain. The double helix structure shows that DNA molecules are able to replicate themselves when cells divide, which perfectly explains the mechanism by which organisms reproduce and species remain stable, and how cells have genetic properties and replication capabilities. The discovery of the double helix structure was a milestone in biology, the beginning of the era of molecular biology, and the foundation of genetic science.

Another example is this hexagonal structure, where some hexagons have short straight lines extending outward at the vertices, and some short lines are inside the hexagon, parallel to the sides of the hexagon. If the protagonist is not mistaken, this is the structural formula of the benzene ring.

The benzene ring is the structure of the benzene molecule, the structural formula is a planar hexagon, each vertex is a carbon atom, and each carbon atom is combined with a hydrogen atom. The carbon-carbon bond in the benzene ring is a unique bond between single and double bonds, both with a bond angle of 120 degrees.

This hexagonal structure of benzene ring is very classic, it was proposed by the German chemist Kekule (Kekule) in 1865, he proposed a structure of benzene, that is, it is possible for carbon chains to be connected head and tail to form a ring. According to the writings of Kekule himself, he was inspired by a dream of a snake joining each other's heads and tails. The Kekuler structure was one of the most satisfying of the many "benzene ring structures" at the time, and it successfully explained many experimental facts.

And on the edge of the benzene ring, there is another larger figure, consisting of a bunch of small squares forming an irregular rectangle with a concave top. At first glance, this table is recognizable as the periodic table of chemical elements, even if the symbols inside the small squares are not the Arabic numerals and 26 letters that the protagonist is familiar with.

The periodic table of chemical elements is a list of chemical elements sorted from smallest to largest according to their atomic number. The list is generally rectangular in shape, with spaces in the period of some elements, so that elements with similar characteristics are grouped into the same family, such as alkali metal elements, alkaline earth metals, halogen elements, noble gases, etc. This results in the formation of elemental divisions in the periodic table, which are divided into seven main groups, seven secondary groups, VIII. groups, and 0 groups. Because of its ability to accurately predict the properties of various elements and their relationships, the periodic table is widely used in chemistry and other scientific fields as a useful framework for analyzing chemical behavior.

The periodic table of chemical elements was invented by the Russian chemist Dmitri Mendeleev in 1869 and is known as the source code of the universe.

I remember that the protagonist read a science fiction novel when he was a child, saying that humans met aliens, but the two sides had a language barrier and could not communicate, so they relied on the periodic table of chemical elements to start a step-by-step language translation. This periodic table can also be said to be the universal language of the whole universe.

Another newly excavated figure, the protagonist used to look at it as a pattern that looks very much like an electronic cloud, perhaps an electronic cloud pattern.

The electron cloud is a kind of graph that uses the density of small black dots to represent the probability of the occurrence of electrons in space. Electrons move at high speed in a small space outside the nucleus, and their motion laws are different from those of ordinary objects, and they do not have a definite orbit. According to the principle of uncertainty in quantum mechanics, it is impossible for an observer to accurately determine the position and speed of an electron at a certain moment at the same time, nor can it trace its trajectory. Therefore, a model that can represent the opportunity of electrons to appear in various places outside the nuclear space in a certain period of time is often used to describe the movement of electrons outside the nucleus. In this model, the density near a point indicates the chance of electrons appearing at that point. Where the density is high, it indicates that there are more opportunities for electrons to appear in the unit volume of space outside the nucleus; Conversely, it indicates that there is less chance of electrons appearing. Because this model resembles a "cloud" with unequal density outside the nucleus, it is called an "electron cloud". It is in 1926 Austrian scholar Schrödinger on the basis of the De Broy relation, the motion of electrons to do a proper mathematical treatment, put forward the second-order partial differential Schrödinger equation, the solution of this equation, if expressed graphically by three-dimensional coordinates, is the electron cloud.

On the other side of the excavation site, the protagonist sees a map of galaxies, perhaps the solar system.

This galaxy map consists of a huge star and nine planets orbiting it, of which the fifth planet is particularly large, the sixth planet has a planetary ring, and the fourth and fifth planets have an asteroid belt represented by numerous dense dots, all of which are highly consistent with the solar system.

But the difference is that the era in which the protagonist lives has kicked Pluto out of the category of nine planets, and the solar system is considered to have only eight planets. And in this galaxy map, the circle of the ninth planet is no smaller than Uranus and Neptune, and it is definitely not Pluto, which is not as big as the moon.

But the protagonist firmly believes that this is the galaxy map of the solar system, on the one hand, because of a strong hunch, on the other hand, it is impossible for two galaxies to be so highly similar, and the environment, climate, and species of the planet where the protagonist is now are highly similar to the earth in the previous life, to say that the two are on different planets, it is too much of a coincidence.

In addition, there are many figures that have been excavated one after another, and there are many familiar protagonists, involving various natural science disciplines such as mathematics, biology, physics, chemistry, and astronomy.

And waiting for the whole "rock" to finally reveal its full picture, the protagonist once again shocked his big jaw...