The ultimate reason why human embryos can survive for such a long time in a liquid environment is because of the mother's supply.

The umbilical cord, placenta, amniotic fluid, etc. are all a kind of energy transmission, and the human embryo absorbs the corresponding oxygen and energy through these channels and ways.

After Liu Yuan finally figured this out, he directly rejected the idea of simulating human embryos and began to think about some other methods.

However, just a few minutes later, Liu Yuan thought of another method, which was related to the embryo.

In the entire universe, or in the entire Dragon Teng Star, Liu Yuan learned biological knowledge not only humans, but also fog beasts in the fog realm.

Some special creatures that lived in the old era were also in the teaching content of the Human Federation, and Liu Yuan naturally had a certain understanding.

Humans are called mammals in terms of biology because they are oviparous, not viviparous.

However, in the liquid environment, there are also living beings on the Dragon Tengxing, but it is because of the evil god "God of Light" that has brought the existence of the Mist Beast in the Fog Realm.

In the entire Dragon Teng Star, at the beginning, these ordinary creatures without great power were slaughtered by these fog beasts.

However, in the knowledge and information recorded in the Human Federation, the creatures of the Old Era have not disappeared.

Therefore, Liu Yuan had already mastered and understood it in the learning process of the Human Federation before.

In half of the cases, mammals do not have the ability to survive in water compared to those that live in a liquid environment.

However, in the records of the Human Federation about the old era of the Dragon Star, there are actually mammals living in the ocean.

At this time, Liu Yuan thought of this place and directly began to search for his own memories to find out why these mammals were able to survive for a long time in the liquid environment of the ocean.

After a few seconds of memory searching by Liu Yuan, he finally found relevant information and knowledge in a content learned in a class of the Human Federation a long time ago.

In the old era of the Dragons, there were also some mammals living in the ocean, and like humans, they could not survive in a liquid environment for too long.

However, these mammals, which live in a liquid environment, make a corresponding change in their bodies.

Liu Yuan found a corresponding information and intelligence from his memory, which mammals that survive in a liquid environment, in fact, they also breathe through their lungs, just like humans.

The act of breathing is actually the absorption of energy, which absorbs into the body a substance in the surrounding environment called oxygen, which is one of the manifestations of energy.

In the transformation through the lungs, so as to use it as a kind of energy support to maintain his normal survival, even when Liu Yuan did not cultivate, he still used this energy absorption method.

However, unlike terrestrial creatures like humans, their bodies are filled with blood just like humans.

And just like humans, the blood vessels that fill the body, and the blood in the blood vessels, are actually a channel and medium for transmitting energy.

And a substance in the blood, in biological knowledge, is called hemoglobin by some scholars of the Human Federation.

This special substance called hemoglobin is a substance in the blood that converts the oxygen absorbed into the body into energy that can be absorbed by the body.

The biggest difference between humans and these mammals living in a liquid environment is that the hemoglobin in the human body is far less efficient at converting oxygen than these mammals.

So, when humans live on land, the breathing rate is very high, but these mammals that live in a liquid environment have a very low respiratory rate.

That is, when humans survive on land, they have to breathe once every two seconds or so, but these mammals that live in a liquid environment can breathe once every half an hour or even fifty minutes.

This is still a state of no cultivation, if these mammals living in the liquid environment can cultivate and gain great strength.

It is even said that it can continue to move and survive in a liquid environment for more than a month, and will not be affected by any of them.

In addition to this difference in hemoglobin, these mammals, which live in a liquid environment, are able to control their various organs more efficiently.

It's like when human beings don't cultivate, they are basically unable to control and perceive these various organs in their bodies, and they are only able to give feedback to human beings in some simple states.

Another point is that they are able to store a large amount of oxygen through the special myoglobin in their body, which can maintain them in a liquid environment for a long time.

These points seem very simple, but they are all evolved over a long period of time by these mammals that live in a liquid environment.

Although Liu Yuan now has the strength of the planetary level, he can also reach this state in a short period of time, but what really bothers Liu Yuan.

Or in a liquid environment, can you live in the same liquid environment as you know about it, mammals, and move freely?

Now, even Liu Yuan can only use the genetic energy in his body to create these kinetic energies to ensure that he can move in the liquid environment.

Therefore, the key for Liu Yuan is to learn how mammals survive in a liquid environment.

In Liu Yuan's memory, he instantly found these mammals living in a liquid environment, in fact, some of them are also similar to human body sizes.

And Liu Yuan found a common denominator, that is, because surviving in a liquid environment, even if you want to fight, you need a certain means to be able to move quickly.

However, in the liquid and terrestrial environments, there are two completely different objects that fill the environment, one is air and the other is liquid.

One of the biggest differences in the movement of the two substances is the difference in density, and the density of liquids is much greater than that of air on land.

Therefore, these mammals, which live in a liquid environment, are not only not limited by this, but also take advantage of this.

High density is a characteristic of liquids, which means that any substance, as long as it is active in water, needs to consume more energy.

However, this means that as long as it is a flat surface that is not hollowed out and completely opened, you can use this high-density environment to gain tremendous speed.

Moreover, in the premise of obtaining such a huge speed, the energy consumed and so on will decrease correspondingly, and even less than the consumption on land.

After Liu Yuan thought of this, a large number of examples appeared in his memory in an instant, such as fish or some mammals that live in a liquid environment.

Whether they use their tail to move or their limbs to move, they are a kind of closed plane.

At this time, Liu Yuan had already thought about what to do, although Liu Yuan did not relieve the state of genetic energy gushing out of his body to help him move.

But in Liu Yuan's limbs, at this time, Liu Yuan deliberately extended a special part composed of genetic energy, which perfectly imitated the creatures that lived in the liquid environment in Liu Yuan's memory.

However, this is the first time Liu Yuan has tried this way of moving, because when he is on land, Liu Yuan can easily judge his direction through the sensations of his body.

But in the water, it is different, and a battle in the water is even more similar to a battle in the sky, because in the direction of movement of the front, back, left and right, and the two directions of up and down are added, there are certain changes in the way of natural combat, skills, and so on.

Soon, Liu Yuan gradually became familiar with it, and with his strong learning ability and understanding, Liu Yuan mastered this way of moving very quickly.

It's just that in some details, Liu Yuan still needs to use the kinetic energy generated by the genetic energy gushing out of his body to achieve the effect he wants.

Now, Liu Yuan has mastered the movement of the whole person in the liquid environment, so in the face of the huge carp opposite, Liu Yuan finally has a certain ability to protect himself.

Next, Liu Yuan needs to keep familiar with this way of moving, so that his movement speed exceeds that of the huge carp opposite.

From the very beginning when Liu Yuan thought of this method, to now Liu Yuan has become regular, and the whole process took Liu Yuan about forty-eight hours, that is, about two days.

And the huge carp opposite Liu Yuan, with a little bit of wisdom, found that Liu Yuan was able to become such a state in such a short period of time.

This has been able to prove that Liu Yuan was able to continuously improve his strength during the entire battle process, and finally defeated him.

Immediately, this huge carp naturally didn't want to die, which directly increased the intensity of the entire battle, but fortunately, Liu Yuan had already mastered this means of moving in the liquid environment.

And then through various means, he blocked the attack of this carp who realized that the situation was wrong.