"Let's continue to explain the fourth dimensional space, the fourth dimensional space is evolved from the three-dimensional space, and it can also be said that the three-dimensional space is the entrance to the fourth dimensional space, just like the previous black hole, it is a kind of four-dimensional space. We all know that two-dimensional space is divided by coordinate axes, and generally there can be four kinds of two-dimensional space, and there can be eight kinds of three-dimensional space divided by coordinate axes, and how many kinds of four-dimensional spaces are there? That's the fourth power of two, sixteen four-dimensional spaces. There are eight kinds of three-dimensional space and countless kinds of two-dimensional space in three-dimensional space, so by analogy, there are sixteen kinds of four-dimensional space and countless kinds of three-dimensional and two-dimensional space in four-dimensional space. In the same way, there are thirty-two types of five-dimensional spaces in the fifth dimensional space, and there are countless kinds of ......"

"Can the instructor explain that if we enter the fourth dimensional space, we can also survive in the three-dimensional space?"

"Theoretically, it is possible, but in practice it is very difficult to achieve, because there are many three-dimensional spaces in the fourth dimensional space, but there are very few that meet the needs of survival conditions, and it is difficult to find. The Platonic dimension space as you know it is only one of many in the same dimension. Some of the links between dimensional space and dimensional space need to rely on black holes to realize, some also need wormholes to realize, and others need to be realized. ”

"As far as the current degree of civilization on the earth is concerned, according to the definition of time and speed in three-dimensional space, it belongs to the third-level primary civilization, and it is known that the speed of light is the fastest, but there is no existence in the earth's civilization that the speed exceeds the speed of light, and only by exceeding the speed of light can it reach the third-level intermediate civilization, and if it gets rid of the dependence on time, it can reach the third-level higher civilization, and then after a certain amount of development, it can basically realize the first-level primary civilization in four-dimensional space."

Zeng Yuyu raised his hand and asked, "Then instructor, I want to ask, what kind of civilization does the alien warship that came to Earth last time and the alien warship we encountered in space belong to?" ”

"They both belong to the Red God Civilization, and the Red God Civilization should have reached the third-level level of the three-dimensional space, but they don't seem to have gotten rid of their dependence on time, so they shouldn't be counted as entering the four-dimensional space, that is, the first-level Void Realm."

"The basic definition of the fourth-dimensional space is almost finished for you, so let's take a look at some of the substances that exist in the fourth-dimensional space." Saying this, Zhao Yichun took out the special container that he showed several old chiefs last time from the operating table. "How do you feel about this thing? Let's talk about it."

Dao Wuji suddenly spoke, "This thing is full of similar energy? ”

Yan Wenjun also felt it, "Why is this material energy so much purer than last time?" How did you do that? ”

Several of the other students were stunned when they heard this.

Zhao Yichun explained: "This is a dark matter energy block, but it has been refined by us, but due to the limited processing technology, it is not enough to process to the level of precision, otherwise this small piece is enough for the energy consumption of an earth for several years." ”

"Wow, is its energy particularly explosive, is it enough for a year's energy consumption of the earth?"

"Huh?! You are thinking too much about this at the moment, and at present, through energy transformation, it should theoretically be enough for a day's energy in a city. ”

When the crowd heard this, they were deflated.

"However, the biggest role of this dark matter energy block at the moment is to equip our dark matter engine warframe as an energy source. In this way, if we encounter a civilization of the level of the Red God, we will also have the strength to fight, except for Yan Wenjun, of course. ”