Tang Xi, these cows and horses, continued to earn creative points for Yi Yun in the book world, while Yi Yun stayed in the blacksmith shop and blacksmithed overnight.

Ding Ding Dong!

The sound of striking iron is particularly noticeable in the middle of the night, but fortunately, the location of the blacksmith shop itself is relatively remote, and Yi Yun's house is leaning on the end of the yard, so it will not disturb the people.

The next day, the stars turned white, Yi Yun's eyes were red, and the whole person looked very tired.

Not physically exhausted, but mental.

He found that his uncle was very light, remembering the appearance of the knife, and then forging it with his heart, which was easy to say, but too difficult to do.

In one night, he swung the hammer tens of thousands of times, and every time he swung it, he chose to close his eyes, and at first he would hit his own hand, and when he became proficient later, although he didn't hit his own hand, there would always be errors in strength.

Not only to smash it, but also to grasp the strength, this is the most difficult, however, Yi Yun was not without gains this night, and the appearance of the knife in his mind was clearer than at the beginning.

Back at school, Yi Yun sent the cows and horses out of the book world, but he didn't leave himself, because the time limit for the five-fold card was about to arrive.

I glanced at my own creation points: 8869.

"Friendly reminder to the host, the five-fold experience scroll can not only be used to create and exchange items, but also can be used to improve the world progress level."

The sound of the system's prompt made Deyi Yun stunned for a moment, and then opened the world progress meter.

World Class: Primordial Mid

Next Level: Primordial Late (16000 Creation Required)

"System, you calculated it on purpose."

Yi Yun looked at his creative value, and after a five-fold discount, he also asked for 8,000 points, and he suddenly returned to the pre-liberation period.

"System, has there been any change in the next level of the world?"

[According to the rules, the world is not upgraded, and too much information must not be revealed, but the higher the world level, the creation value required to exchange items and create will be reduced by a certain proportion.] 】

Yi Yun rolled his eyes, of course he understood this truth, in fact, it was nothing more than a matter of enjoying first and enjoying later.

He cares about this specific number.

If after upgrading, the creation value required to redeem items is reduced a lot, it is naturally more cost-effective, but if the reduction is less, then there is no rush to upgrade at all.

[In fact, the host can start from the demand side, if the host is in urgent need of the creation value now, it can be postponed to upgrade, if the creation value is redundant, it can be used to upgrade the world in the book. 】

This reminder from the system made Yi Yun's eyes light up, yes, thinking about the world for a long time must be upgraded, and it is definitely better to rise early than late.

Anyway, I don't have any urgent use for my current creative value, so I can use it to upgrade the world in the book.

"System, I choose to upgrade."

[Upgrade the world in the book, search conditions are ......]

[Building 1010, satisfied]

[Creation value of 16000 (half of the five-fold card), has been satisfied]

[Number of dragon sets: 100100, satisfied]

[Number of supporting roles: 55, satisfied]

【World Upgrade......

[Estimated to take 15 minutes...... No one will be allowed to appear in the world during the upgrade]

……

Yi Yun was withdrawn from the world, and Yang Chun and the others had already gone to the classroom, but Teacher Zhang An had already granted him permission not to go to class in the morning.

Although he doesn't have to go to class, Yi Yun still has to practice ink and wash clouds, mainly because these items needed to practice ink and wash clouds are all provided by Tang Xi, and if you can rub it for a few days, it will definitely not be so good when the training is over.

Without the help of this agarwood and ink, the speed of cultivating ink cloud would be slower, which Yi Yun learned from Tang Xi's mouth.

Because before the two of them traded, Tang Xi had already said that he would contract the items he consumed to practice ink cloud in the academy.

But what Yi Yun didn't know was that Tang Xi had already regretted it in his heart, the reason was very simple, originally in Tang Xi's imagination, Yi Yun estimated that during the training, Yi Yun would not be able to cultivate the beginning, and the materials needed would not be much, and she could still afford these materials.

But what she didn't expect was that Yi Yun, a pervert, would get started so quickly, and every time he cultivated, he made progress, and the materials consumed were also rising slowly, and it was no exaggeration to say that the materials consumed by cultivation in the past few days were worth millions.

If it weren't for the fact that she boasted about Haikou at the beginning, Tang Xi really didn't want to provide it anymore, and with her family background, she felt a little painful, especially since there were still many days to go before this training.

Yi Yun naturally didn't know this, but he knew a truth, that is, if he could prostitute for nothing, he would prostitute for nothing, and how fragrant it would be.

……

In the afternoon, Sun Jingchang led everyone to prepare to go to the Dou Ling Altar again.

"You don't have to go."

However, when everyone else entered the virtual spirit network, Sun Jingchang suddenly said this meaningfully to Yi Yun.

"Okay, I'll listen to Mr. Sun."

Yi Yun knew that this Teacher Sun should have guessed that he was a man with a red dot mask, and he didn't deliberately try to defend and conceal it.

The reason is very simple, this academy was set up above, and those who can serve as teachers here are naturally strictly reviewed, and he believes that this teacher Sun will not expose his identity.

Instead of going to Lingwang, Yi Yun decided to go to the blacksmith shop, but before he went, he went to the world of books.

As soon as his consciousness stepped into the world in the book, Yi Yun clearly felt the changes in the entire world, and at first glance, the entire map section was dozens of times larger.

In the most remote part of the north, mountain peaks rise there, forming a mountain range.

In the southern area, there is a lake, stretching for dozens of miles, and even Yi Yun can see the lake gushing and there are fish churning there.

However, compared with the changes in the world, Yi Yun is more concerned about the creation museum, which is the core of the whole world.

Entering the creation hall, Yi Yun checked the creation value required for creation.

One Stroke: Requires a creation value of 80.

Power of One Stone: Requires a creation value of 320.

……

Seeing these data, Yi Yun compared it and found that it was 20% less than the original, which means that this time the system upgrade, the creative value in all aspects is 80% of the original.

Don't underestimate this 20% reduction, as long as the base is large enough, then the reduction is an astronomical number.

In addition, there is an extra quill in the gallery.

[Blue Bird Feather: The tattered feather that falls from the Blue Bird's body, which can reduce the creation value by 1% when used]

Seeing this introduction, Yi Yun couldn't help but be a little curious, this dilapidated feather can be reduced by 1%, so what if it is an intact feather?

After determining the creation hall, Yi Yun looked at the list of items exchanged, and the value of these items was also reduced by 20%.

"System, the creation value of the exchanged item has been reduced by 20%, what about recycling?"

[Recycling is still 50% of the exchange required.] 】

"Uh...... You didn't say that. ”

Yi Yun suddenly regretted a little, doesn't this mean that the creative value created by those cattle and horses who struggle every day has also shrunk by 20%.

"Where are the other changes to the world upgrade?"

Knowing that the facts are no longer able to change, Yi Yun is not entangled, he wants to know what changes will be made after the world is upgraded.

[Some world-level special items have been updated in the list of exchange items, which can be viewed by the host]

Hearing the system's prompt, Yi Yun noticed that there was an extra box in the column of the list of items to be exchanged: the column of original late-stage items.

After clicking on it, I found that there were more than a dozen items inside.

[Flame Totem: The Cult of Fire in the Primitive Era, after comprehending, you can get a 10% bonus by cultivating fire attribute spiritual skills, up to 100% bonus, and you need a creation value of 1000]

[Water Totem: The Worship of Water in the Primitive Era, after comprehending, you can get a 10% bonus by cultivating water attribute spiritual skills, up to 100% bonus, and you need a creation value of 1000]

[Wind Totem: The Worship of the Wind of the Primitive Era, after comprehending, you can get a 10% bonus by cultivating the wind attribute spiritual skill, up to 100% bonus, and you need to create a value of 1000]

【Totem of Earth: ......】

【Totem of Gold: ......】

Five elements totem, this is understandable Yi Yun, people in the primitive era because of their ignorance of the world and natural disasters, so they are full of worship of nature, each tribe and race has its own totem, and the object of worship is also strange.

This is a good thing, the most important thing is that the creation value required is not high, 10,000 creation values can be stacked to 100%, which is equivalent to doubling, which means that the speed of cultivating spiritual skills will be doubled.

Don't underestimate that it's just doubled, you can't see anything in a short time, but if it's a long time, one year of cultivation is equivalent to two years of cultivation for others.

The most important thing is that not only is the cultivation speed doubled, but the power is also doubled.

The ink cloud that you cultivate by yourself belongs to the water attribute spirit skill, and if you have this totem, the speed of your own cultivation will be faster.

"System, what is the next era?"

[The late primitive era is followed by the slave age, and if you want to enter the slave age, you need to meet the following conditions]

[Number of sets: 1000]

[Supporting Role: 20]

[Thirty different buildings]

[Creation Value: 50000]

[Complete the three tasks promulgated by the system]

Looking at the conditions, it's not too exaggerated.

"What task?"

[The first task: fulfill the wish for the dragon]

[Task Explanation: A complete character with his own joys, sorrows, sorrows and wishes, please fulfill a wish for him]

[Task reward: The task reward depends on the creation value invested by the host, and the reward is 1 to 5 times the creation value invested, and the specific reward multiple depends on the completion of the wish and the satisfaction of the dragon set. 】

This task made Yi Yun's eyes light up, isn't this giving himself creative value for nothing?

No, you must find a more difficult wish to complete, the more you invest, the more you earn, at least double.