Mathematics, history, physics, and chemistry are all courses that Ye Xuan had to face when he studied in his previous life.

However, in this world, these lessons have not yet been discovered, and even if some factions have such knowledge, it is definitely an extremely secret existence.

In particular, mathematics, physics, and chemistry, which are often used by people, are definitely secrets at the inheritance level, and they will not be easily passed on to others unless they are their own inheritors.

Of course, in this world, we don't call that knowledge mathematics, physics, chemistry, and most of them are called physics, metaphysics, arithmetic, and so on.

So when Ye Xuan said the names of these courses, a trace of confusion flashed in Liu Ruxin's eyes, because she couldn't understand what Ye Xuan meant.

But Ye Xuan said so seriously, and her tone was so sincere, she could also be sure that Ye Xuan didn't speak, and he really wanted to learn this.

After thinking carefully for a while, Liu Ruxin finally couldn't help but ask: "Young Master Xuan, what kind of existence is the academic in your mouth, why have I never heard of it?"

"I haven't heard of it, this ......" Ye Xuan was also stunned, and at the same time he regretted a little in his heart that he shouldn't have said this.

But after thinking about it, he found that he really couldn't read for a day, so he decided to explain these courses to Liu Ruxin.

"Well, since you haven't heard of it, I'll explain it to you. After Ye Xuan made up his mind, he began to state according to the understanding of the previous life: "Mathematics is the study of concepts such as quantity, structure, change, space, and information. ”

"Physics refers to the study of the inner laws or principles of things. ”

"Chemistry is the study of the composition, properties, structure and change of matter at the molecular and atomic levels, and can create new substances. ”

"History doesn't need to be explained too much, it is the cultural inheritance of our world in the past, and the trajectory of our human civilization. ”

After Ye Xuan finished stating the concepts of these disciplines, he just stared at Liu Ruxin, thinking about her thoughts at the moment.

Looking at Liu Ruxin again, she is now in a more confused state.

Ye Xuan looked at Liu Ruxin's cute face, and Ye couldn't help laughing.

With his smile, Liu Ruxin's face suddenly turned red, obviously very embarrassed.

There's no way, who let Ye Xuan say just now, she really can't understand most of it, but Ye Xuan said it so quickly, and the tone was so natural, no matter how she looked at it, it didn't look like a lie, so she had no way to refute it.

After a while, Liu Ruxin saw that Ye Xuan was always looking at him, so he gritted his teeth and said: "Young Master Xuan, I don't understand the mathematics, physics, and chemistry in your mouth, and I have heard many of your words for the first time, and their names are very mysterious, very similar to the academics of Taoism and Yin-Yang family. ”

At this moment, she couldn't care about face, because she had been attracted by the new things that Ye Xuan said, and even thought of the top factions in this world, Taoism and Yin-Yang Family.

Facing Liu Ruxin's doubts, Ye Xuan shook his head and said: "No, Taoism and Yin-Yang may involve knowledge such as mathematics, physics, and chemistry, but mathematics, physics and chemistry do not belong to Taoism and Yin-Yang Buddhism, because no matter where they are, they will use the three disciplines of mathematics, physics, and chemistry. ”

"Everything in the world is related to mathematics, physics, and chemistry?" Liu Ruxin was even more puzzled, and couldn't wait to ask: "Young Master Xuan, I can understand the history you said, but I have never heard of mathematics, physics, and chemistry, where did you know all this?"

Suddenly, Liu Ruxin thought of a key question, that is, why did Ye Xuan know this.

What Liu Ruxin is most concerned about at this time is not what kind of role these three academics have and what kind of effect they will have, but why Ye Xuan, a person with amnesia, knows about them.

This question is also the reason why Ye Xuan regretted saying mathematics, physics, and chemistry just now, because if he wants to explain this problem, there is really only one way to lie.

Whenever he encountered this kind of problem, Ye Xuan would think of the sentence: "A lie needs countless lies to cover up." ”

"Actually, I don't know!" In order to explain the origin of mathematics, physics and chemistry, Ye Xuan pretended to be in pain and closed his eyes, and then gritted his teeth to think.

After a long while, he took a long breath, and then said helplessly: "I can't remember where I learned about mathematics, physics, and chemistry. Although I have lost a lot of memories, I remember these three subjects very clearly, as if they were common sense, which is really strange. ”

Ye Xuan's explanation is very pale, and the performance is also very pale, if it is put on the earth, it is estimated that most people will not believe Ye Xuan's words.

However, this is not the earth, so in these two explanations that seem to be falsehoods, Liu Ruxin basically didn't doubt it, and believed Ye Xuan's words, because she thought of a possibility.

"Bloodline inheritance, it must be bloodline inheritance, Young Master Xuan, you are the last bloodline of the winner, you have experienced the catastrophe of life and death before, and you have been stimulated enough, so this is the awakening of the winner's bloodline inheritance and the knowledge left by the ancestors. After listening to Ye Xuan's explanation, Liu Ruxin excitedly held Ye Xuan's shoulders and said her guess.

There are two kinds of inheritance, one is the spiritual book inheritance.

The inheritance of spiritual books is very convenient, but there is also the possibility of being taken away and deceived by others, so it is relatively dangerous.

But the bloodline inheritance is different, the bloodline inheritance can only be obtained by people from their own family, and outsiders can only know it from the mouths of those who have obtained the bloodline inheritance, so the bloodline inheritance is more advanced, but it is also more difficult to compose.

Even for Liu Ruxin, the bloodline inheritance is also the kind of legendary existence, throughout the nearly 1,000 years of history, Liu Ruxin has never heard of anyone who has received the bloodline inheritance.

If a person starts the bloodline lineage, then it will be known to the world over time.

Bloodline inheritance is different from spiritual book inheritance, if a person wants to pass on his knowledge in the way of bloodline, then this person must at least be at the level of a legendary sage.

In this world, the Book of the Great Emperor is already almost a legendary existence, and the Book of Sages is even more on top of the Book of the Great Emperor.

If you want to become a sage, there are only two ways to condense the book of sages.

The first method is to join a faction, and then integrate all the knowledge of that faction, and obtain the inheritance holy book of this faction, and merge it with your own spiritual book, and become a sage in one fell swoop.

The second method is to create a faction, which is recognized by the laws of heaven and earth, and achieve the book of quasi-sages.

After that, the knowledge of the faction will be spread all over the world, and it will be recognized and learned by the people of at least one country, so that a kind of mysterious power will be generated.