"Mr. Chen, that Sokka man is gone, should we go back too?" Khafra's voice rang. "Okay, let's go!" Chen Xin looked at Khafra who was following him, and couldn't help but shook his head. Although Khafra usually performed well, at the critical moment, this guy still couldn't get on the stage. It¡¯s just that there aren¡¯t many trusted people around me now, so I can only make do with it for the time being. In the next more than a month, Chen Xin lived in seclusion on Dongchenxing. This time he sold such a large batch of Golden Crows, and there were many people monitoring him. In addition to the dark market, he also became the target of many silicon-based civilizations. The delicious food. Of course, as long as he doesn¡¯t leave the dark market, no one will trouble him. After all, on the surface, the dark market still needs to maintain its rules, otherwise it would be a chaos between the two major alliances. Liya did not come to find Chen Xin. Her identity in the dark market was public. Any action would attract the attention of all parties. In addition, Chen Xin has now become a point of concern for major forces. Therefore, in a short period of time, the two of them There was no way to meet. On the Blood Moon Civilization side, they settled on an Earth-like planet about 20 astronomical units away from Dongchen Star. Apart from monitoring that the other party had contact with people from the Raccoon Civilization, Gang Biao made no other special discoveries. "There is nothing we can do about it. After all, Gangbang has only reached the level of a fourth-level civilization, and there is no way to monitor the other party's quantum communications without alerting the other party. Speaking of which, I have to mention quantum communication. The quantum communication mentioned here is different from the quantum communication on the earth. The so-called quantum communication on the earth is only quantum confidential communication, which is only the most elementary application of quantum communication. Real quantum communication refers to quantum action at a distance. That is, two entangled particles have a mysterious relationship with each other. Even if they are separated by the entire universe, if the state of one particle changes, the state of the other particle will inevitably change, as if there is telepathy. Quantum communication is one of the cornerstones of the Age of Discovery. Without quantum communication, interstellar spaceflight would be a joke. Many second-level civilizations are not recognized as official cosmic civilizations by the two major alliances just because they cannot create quantum communication systems. Only when the s¨¡n j¨ª civilization has created a quantum communication system within ten light years will it be officially accepted into the two major alliances. As for Level 4 civilization, their quantum communication system can cover hundreds to thousands of light years. Only a fifth-level civilization like the Tianqin Civilization can create a river system-level quantum communication system. Regrettably, the Blood Moon Civilization is exactly such a civilization. But Chen Xin is not too worried. Since Tianqin Civilization knows their existence in advance, it is not afraid of them causing any trouble. After all, Tianqin Civilization is the fifth-level peak civilization closest to Dark Market No. 7 in the Carbon-Based Life Alliance, and it has great power in Dark Market No. 7. ¡°To deal with the Blood Moon Civilization whose base camp is tens of thousands of light years away, even if there is a Raccoon Civilization on the side to help, it is no problem. During this time, Chen Xin has been immersed in research. After so many years since the Tianqin Civilization, although he has not been able to master all the technologies and culture of the Tianqin Civilization, in the field of basic science, Chen Xin has almost digested all the technologies of the Tianqin Civilization. Especially in the fields of mathematics or physics, even when facing the top scientists of the Tianqin civilization, Chen Xin is confident that he can surpass them. During this period, Chen Xin has been thinking about the entry point to advance to the sixth level civilization. Although Gang Bing has long pointed out that the direction of the sixth-level civilization is dimensional technology, how to penetrate the technological tentacles into the space dimension field is still a huge problem. Tianqin Civilization can accumulate huge amounts of resources to continue trial and error, and then find a correct path. But Chen Xin only has a single weapon, so he can only think about the possible technical routes of dimensional technology through research on mathematics and physics. Some time ago, Chen Xin returned to Dongchen Star and talked with Gang Biao about quantum communication technology and the interaction between two particles at a distance, which gave him a hint of inspiration. He later gave an analogous conjecture model. ??Imagine a car with three rearview mirrors. Through two of the rearview mirrors, I happened to observe two cars approaching from behind. One vehicle is observed in each mirror. Both cars have the same color. But the size, speed of movement, and direction of movement of the cars are all different. After observing for a long time, I gradually discovered that these two cars are very good.??It's like each other knows that the other exists. When one car rotates clockwise by one angle, the other car must also rotate clockwise by another angle. When one car accelerates, the other must also accelerate. After a long time, the two cars disappeared. But at the same time, through another mirror (transparent windshield), I suddenly saw another car of the same color appearing diagonally ahead. This means that the two cars you saw before are the car in front of you now! It turns out that the two cars were actually different images of the same car. Although they appear in different locations [the two rearview mirrors], they are actually the same object. Therefore, quantum entanglement and action at a distance are probably the mapping or projection of high-dimensional space-time in four-dimensional space-time. ¡°Perhaps the essence of the problem is simpler than imagined, but scientists have not yet found it. This is just like no one thought at the time that gravity could be explained as a natural manifestation of the curvature of space and time. It is also like an ant living in a quasi-two-dimensional plane. It saw a shadow on the ground. It grew bigger for a while, smaller for a while, an ellipse for a while, a perfect circle for a while, and the trajectory was quite complicated. The ant worked hard and summarized a bunch of formulas for calculating the shadow. After repeated trials, it can accurately predict the shape, size and position of the shadow at the next moment. Later, the ant finally found out that the shadow was just the projection of a basketball under the street lamp. The size and shape of the basketball never changed! After Chen Xin told Gang Rui about his idea, Gang Rui thought for a long time and believed that it is extremely feasible to study the spatial dimension in the field of quantum communication. But there is no other way to study Chen Xin next. Whether it is experimental verification or theoretical calculation, it requires a huge investment of resources and the participation of countless top scientists. It is simply impossible for Chen Xin alone, or even human civilization, to conduct research on such a scale. Chen Xin simply told Liya his thoughts. Of course, he did not say it directly. He just told the other party that quantum communication technology could be used as an entry point for dimensional technology, which might help Tianqin civilization save time to advance to the sixth level civilization. . Liya was overjoyed when she heard this, and after communicating with the leadership of Tianqin Civilization, she immediately started a research on quantum communication technology within Tianqin Civilization.