Upgrading to improve mental power was beyond Ye Yang's expectations, so he changed his arrangement and decided to devote part of his time to leveling.

But these are all things for the future, and what Ye Yang has to do now is to enter the natal space.

After locking the door and making sure that no one would enter, Ye Yang directly used the boundary power to isolate the detection of others, and then entered the natal space with his real body.

The use of boundary power is to prevent Kayaba Akihiko, otherwise seeing his body disappear, Ye Yang is really not sure how Kayaba Akihiko will react.

Physical entry is not the same as spiritual entry.

As long as the spirit enters with one thought, then it will be automatically converted, and when the real body enters, Ye Yang's eyes will suddenly go dark, and then there will be a feeling of dizziness that makes him unconscious.

When he opened his eyes again, he found that he had arrived in the natal space.

"Is that the case...... Ye Yang muttered to himself.

Then Ye Yang waved his hand, and a scroll of paintings appeared directly in front of him, which was the painting he had integrated into his body before, but now there were five dots on it, two bright and three dark.

From the moment he entered the natal space again, Ye Yang understood what was going on.

The reason why he was able to travel through the world and enter the natal space was due to the painting that appeared with only two points when his realm power reached the third order before.

It was this scroll that changed his physique, allowing him to enter his natal space, and at the same time, he could use his natal space as a transit point to enter other worlds.

Each dot on the painting represents a world.

Today's two bright dots represent the Sword Art Online World and the Natal Space respectively.

And those three dark spots, one of which is his own main world, one is unknown, and the last one is connected to the Sword Art Online world, Ye Yang feels that this should be Asuna's real world.

"It seems that it was because I forcibly opened the boundary map crossing at the last moment to save my life, which caused the connected passage to fail, and I had to connect again.

It takes about two years to return to the Overworld again, and Asuna's real world only takes one year, and the remaining point of time is unknown.

This time can be reduced by channeling boundary force, and if a portion of the boundary force is channeled every day, it will only take about a year to return to the Overworld. ”

Yes, the boundary map, Ye Yang named this volume with only points as the boundary map, the map of the world, and each point represents a world.

……

After knowing when he would be able to return to the main world, Ye Yang breathed a sigh of relief. His biggest concern was that he couldn't find a way to go back, and since there was a way to go back, everything would be relatively simple.

Enumerating all the existing information, Ye Yang pondered for a while.

In other words, now I have the ability to travel through the world, as long as a new point appears on the map, I can use it to teleport through it after the passage is established.

You only need to enter the current Boundary Force every day, and then you can reduce the time to return to the Overworld to one year.

During this year, I want to recover my cultivation as much as possible, and at the same time, the benefits of the Sword Art Online World to improve my spiritual power for free cannot be wasted, which means that I will spend some time on leveling.

After thinking for a while, Ye Yang made a decision.

"Two years, stay in this world for two years at most, and after two years, I will start to return to the main world, and in these two years, I will recover my cultivation as much as possible, at least obtain the fifth layer or above of the Spirit Storage Realm!"

After deciding, Ye Yang began the next step.

When he was resting in the main world, he used the realm power to expand the natal space from time to time, and the realm power cultivated in this world this afternoon was also used to expand the natal space, and now the size of Ye Yang's natal space has reached tens of thousands of square meters.

But Ye Yang could feel that there was still a considerable distance from the upper limit.

It's just that what Ye Yang is thinking about now is not expanding the natal space, but other things.

As soon as his mind moved, a spring began to appear in the originally barren natal space, and then continued to expand, until it had an area of dozens of square meters, and Ye Yang stopped.

Feeling the aura emanating from the spring water in front of him, a smile appeared on Ye Yang's face.

"It worked."

[Hot Springs]: Soaking in it can slowly restore spiritual power and spiritual power.

This is inspired by the game, after arriving in the Sword Art Online world, he felt that his previous idea of how to use his abilities was very rough, just pure alchemy and fighting.

On the other hand, in the same virtual world, Sword Art Online is so perfect.

With his current limit of realm power, the amount of time it would take to build a world like Sword Art Online was astronomical, and he wasn't going to do that.

He just put his thoughts on recovering his spiritual power.

Since at present, cultivation can only be improved through battles in the virtual experience space, how to restore the spiritual power required for battle is a very important issue.

Although it is impossible to cultivate in this world, since it can use spiritual power, then it is right to be able to recover spiritual power, with this kind of thought, Ye Yang created such a spring water, which can also be said to be a hot spring.

As long as you soak in the hot spring, you can recover your spiritual power and spiritual power at an extremely slow rate.

Now the role that this hot spring can play is very limited, and he roughly estimated that if he wanted to fully recover his spiritual power from the eighth layer of the Spirit Storage Realm before, he would have to soak it for at least a few days.

But this doesn't matter, the most basic success, after that, as long as the realm power is consumed to improve the quality of the hot spring, then the recovery speed will naturally increase.

It's a pity that because the concentration of aura in the natal space is too low, this hot spring is constantly emitting aura, which means that Ye Yang needs to input a part of the realm force every day to maintain it. It can't be stopped until the concentration of aura in the entire natal space rises to a certain level, otherwise this hot spring that can restore spiritual power will slowly turn into an ordinary hot spring.

In the same way, every time someone soaks in the hot spring, the effect of the hot spring will be reduced, and the boundary power needs to be entered again to replenish the consumption.

……

Consumption aside, Ye Yang had a feeling when creating this hot spring.

That is, no matter how much realm power he transports, there is an upper limit to the recovery effect of this hot spring, which is related to the scale of the natal space.

Now his realm power is the third order, the largest natal space is the peak of the third order, and the biggest role that the hot spring can play is that soaking for 24 hours can completely restore the third order martial cultivation, that is, all the spiritual power of the peak martial cultivation of the normal manifestation realm.

And the spiritual recovery aspect is similar, equivalent to an alchemist of the same rank.

Maybe it's too long, but to that extent, it's enough for him, after all, he was only at the eighth level of the Spirit Realm before, and it only took a few hours to regain his spiritual power.

It's almost the same as cultivating in the main world, but fortunately, there is finally one more means to restore spiritual power.

It is worth mentioning that both spiritual and physical hot springs are effective.

Ye Yang has no intention of making the Natal Space Boundary Bead for the time being and letting others enter his natal space.

As for how to develop the natal space in the future, and how to maximize the use of his realm power, Ye Yang already has a plan, but it still needs to take some time to further improve his ideas.

……