After carefully concentrating for a moment, Yang Kai opened the wooden box again and took out the top-grade world fruit from the World Tree Sub-tree.

The fragrance is swaying, which makes people's index fingers activate.

He also took the middle-grade world fruit from the mother tree, so he could go straight to the sixth grade from the fifth grade. He naturally remembered the taste of taking this fruit.

After looking at the fruit for a moment, Yang Kai opened his mouth and stuffed it into his mouth. The baby's fist-sized fruit entered his mouth. Yang Kai flicked the tip of his tongue, and the moment the peel broke open, a sweet feeling filled his tongue.

The warm feeling fell straight into the abdomen along the throat. The next moment, the wind and clouds surging in the small universe, and the huge and rich power of heaven and earth were produced in plain sight. Even the world tree transplanted into the small universe began to rustle.

And this power that was born in vain was not harmful to Yang Kai, nor was it impurities. It was so pure that no one could easily refine and absorb it.

This is the mystery of the world fruit.

Yang Kai carefully guards his mind and silently uses his mysterious skills. Every time the small universe is permeated, the foundation will be enhanced, making the small universe's great power more intense and solid.

This situation lasted for more than ten days, and it was not until nearly half a month later that Yang Kai felt that the medicinal effect of the world fruit he took was completely refined.

At this time, Yang Kai couldn't help but feel slightly moved when he examined his own small world.

Although he had long known that this top-grade world fruit was not enough to directly advance to the eighth grade, and only enhanced his background and saved him a lot of hard practice, the result of this still surprised him a little.

Xiao Qiankun's foundation has been enhanced by at least 20% compared to before. Don't underestimate these 20%. If he wants to practice hard, it will take at least three or five hundred years.

In other words, a top-grade world fruit from the World Tree subtree saved him three to five hundred years of hard practice.

Such benefits are really not small.

Three or five hundred years of hard practice are enough to make his seventh level more stable and his strength also increase.

In fact, because the level of the Kaitian Realm is slowly improved after the Kaitian Realm, the years of practice are often calculated in a hundred years, thousands or even tens of thousands of years. Therefore, in the early years, someone proposed that it is best to divide each level of the Kaitian Realm into the front, middle and late stages, so that it is convenient to evaluate the strength and level of the Kaitian Realm warriors.

If it is really divided into this, Yang Kai was only in the early stage of the seventh grade before. After taking this World Fruit, although it is still in the early stage of the seventh grade, his strength has not improved at all.

However, the division of this strength level is too complicated, so it is not accepted by the world, so it is left alone.

But this also shows why there is a huge gap in strength between the Kaitian Realm between the same level.

A new seventh grade is only the early stage of the seventh grade, and an old seventh grade, such as Feng Ying, is definitely the late stage of the seventh grade. The difference between the two is at least two or three thousand years or even longer. The difference between them is huge. If they really fight, they are naturally no match.

A top-grade world fruit saved him three to five hundred years of hard practice. What if he took a few more?

Yang Kai couldn't help but have some reverie.

However, he also knew that this was impossible. Not to mention that there were only a dozen of the top-grade world fruits picked from the World Tree, he was able to get one because of all the previous contributions. There were so many top-grade Kaitian in Biluo Pass, and others always made great contributions. These top-grade world fruits are the best for rewards. However, it is even said that the eighth-grade town and the legion commanders will also be of great benefit to take this fruit.

Furthermore, if you take the same treasure many times, the effect will definitely weaken layer by layer. A top-grade world fruit can save Yang Kai from three to five hundred years of hard practice, and the second one may be reduced by half. When the third one and the fourth one may be completely useless.

All rare genius treasures generally have this kind of commonality.

In any case, Yang Kai was extremely satisfied with the harvest of a top-grade world fruit.

The sudden increase in background and strength also made him feel a little uncomfortable, and he quickly calmed down and consolidated his own gains.

It was not until January that Yang Kai let out a long sigh. Although he was still a little uncomfortable with the surge in power, it was already fine. Even if he fought with a strong enemy at this moment, he could still exert all his strength.

After a short rest, Yang Kai took out a set of seventh-grade resources to activate the power to refine it.

In the past, he used to refine the sixth grade resources when he was practicing, but now that he has become the seventh grade, he is naturally qualified to refine the seventh grade.

Refining resources with the same level as your own has always been the fastest and most eager way of practice in Kaitian Realm.

However, for top-grade Kaitian, basically no one is so luxurious.

Not to mention anything else, the resources of the seventh-grade Yinxing and Yangxing are extremely rare, and they are strategic materials even in the blessings of various caves and heavens. They will not be used easily. Who would be willing to take them out to practice?

Yang Kai is different. In the small universe, yellow and blue crystals accumulate into mountains, and there will be no lack of resources that can be used for yin and yang.

He also prepared a lot of resources for the five elements, which were enough for practice. On this battlefield of Mo, improving one's own strength and grade as soon as possible is the foundation of his life. Therefore, he did not feel distressed when using the seventh grade resources to practice.

Refining the entire set of resources to practice, the word "fast" is prominent.

There was a boring Kaitian Realm who did experiments, refining a set of four-grade resources, and then using a set of four-grade resources to exchange for the corresponding number of Kaitian Pills to refine. In comparison, the strength that can be improved by refining a set of four-grade resources is less than half of the improvement of refining those Kaitian Pills.

This person used fifth-grade resources to experiment and got the same result.

In other words, the benefits obtained from refining a complete set of practice resources are roughly equivalent to refining the corresponding number of Kaitian Pills or even less than half.

How could I bear to waste it like this in the ordinary Kaitian Realm?

The Kaitian Realm where the experiment was conducted did not use the sixth and seventh grades to test. One was not strong enough, and the other was financially short.

But I think the result is the same. Whether it is refining the sixth grade or the seventh grade resource, it will be wasted.

What is wasted is not the power of the resources themselves, but the value that these resources can maximize.

But now Yang Kai just wants to improve his strength as soon as possible. He has no shortage of resources. So what if he wastes it? Can the efficiency of refining Kaitian Pill be comparable to that of refining seventh grade resources?

The flow of time, the power in a complete set of seventh-grade resources was slowly swallowed and refined by Yang Kai Xiao Qiankun, turning into his own foundation.

Even though Yang Kai is now in the seventh grade, it takes a lot of time to refine a set of seventh grade resources.

It took almost half a year before that set of seventh-grade resources turned into powder and the energy was completely eliminated.

Yang Kai opened his eyes, and there seemed to be a lightning flash in his eyes, his eyes shining brightly.

The refining of a set of seventh-grade resources has enhanced his small universe a little.

However, during the whole process, he felt something was wrong. It was not a bad thing, but the speed of his refining resources seemed to be much faster than expected.

This was the first time he was refining seventh-grade resources in his practice. He had never done this before, so he was not sure, so he did not stop halfway.

Now that he recalls the entire process of refining, the speed is indeed extremely fast. You should know that it took about the same time as he refined a set of sixth-grade resources at that time. Although he was at the sixth-grade at that time, and now his cultivation level has improved, the refining speed will definitely increase, but the increase is too much. Moreover, what he is refining is now seventh-grade, which is incomparable to the previous refining sixth-grade.

A complete set of sixth-grade resources is worth almost 130 million to 150 million Kaitian Pill. When Yang Kai was at the sixth-grade, if he refined Kaitian Pill, he could refine more than 100,000 pieces every day. If he used a complete set of sixth-grade resources to exchange for Kaitian Pill, it would take at least four or five years for Yang Kai to consume it.

However, if you refine a complete set of sixth-grade resources, it will only take half a year.

Yang Kai thought it would take at least several years to refine a set of seventh grades, but he never thought that this was the result.

After frowning slightly and pondering for a moment, Yang Kai took out a set of sixth-grade resources and refined them quietly.

This time, while he was refining, he was also paying close attention to the changes in his own small universe.

In just one month, the energy of the sixth-grade resource was lost and there was no value.

Yang Kai, who opened his eyes again, showed a thoughtful look.

At the time of the sixth grade, it took him half a year to refine a set of sixth grade resources. Now even if he is promoted to the seventh grade and his strength has improved, it will not be possible to achieve this in just one month. Normally, it may take three or four months.

When he was refining, he had external help.

And that external force is the world tree that integrates with his own small world!

Although under his close attention, there was no abnormality in this world tree subtree when refining resources, Yang Kai could conclude that it was definitely its problem.

Because at this moment, I have no other changes compared to the time of the sixth grade, but there are more subtrees in the small universe.

This subtree can actually increase the speed of refining resources and greatly improve. What is the reason?

Yang Kai couldn't understand, but this was a great benefit to him. The speed of refining resources was improved. In other words, as long as he devoted himself to hard work, his strength would grow faster than that of ordinary warriors, and he might not see anything in a short time. However, the seventh grade to the eighth grade is a process of accumulation over time. Over time, the benefits brought by the subtree will be terrifying.

At that time, he and several legion commanders said bluntly that there were three benefits to collecting the World Tree, but he did not expect that there was another one hidden here. He did not intentionally conceal it, but he did not discover it at that time. If it weren't for Yang Kai's meditation practice this time, he would probably not have discovered it.

This was a real surprise. The Zishu was exchanged for his military achievements, so he was deducted a lot of military achievements. However, compared with the various benefits that the Zishu could bring, what did those military achievements count? It was simply a free gift.

In addition to being happy, Yang Kai even found such boring practice interesting, and immediately took out a set of seventh-grade resources to refine them.
Chapter completed!