The social environment of Douluo Continent is close to ancient times on earth, and the age of starting a family and establishing a business is earlier than that of modern times.

In addition to the influence of the factor of soul power, naturally precocious maturity is faster. Girls have an impressive figure at the age of twelve or thirteen, while boys become real adults at the age of 15 or thirteen.

Among the common people, most of them are fifteen years old as the age of adulthood, and for nobles and sects, they set their age at eighteen.

The Tiandou royal family was even later. They only held their coming-of-age ceremony at the age of twenty, which was considered a truly self-contained adult.

As the Prince of Tiandou, Xue Qinghe's 20th birthday is the fifteenth day of next month.

The coming-of-age ceremony at the age of twenty is even more special to the royal family.

If it is an ordinary royal family, in addition to proclaiming their adulthood at the age of twenty, they also mean that they have the qualifications to open a palace.

You can get a piece of territory from Emperor Tiandou. Of course, even if you don’t have a territory, you can get a pioneering order and go to the wilderness to build a town.

As for the prince, although he could not obtain his own territory like other royal families, he himself was the future ruler of the empire. While he became an adult, he would also have the power to supervise the emperor!

Since adulthood, Emperor Xueye will gradually delegate power to Xueqinghe regardless of whether he is in good health or not, so that he can manage this huge country in advance.

Because of this, the prince's coming-of-age ceremony is the top priority of the country. The royal family invited countless nobles and sects to this day to build momentum for the prince.

Ye Yu is neither a nobleman nor a sect, and he is not as close as the Tiandou Royal Family. He is just a Tianwei-level student at Tiandou Academy. The prince’s adult banquet had nothing to do with him.

But he couldn't resist Xue Qinghe, the protagonist of the coming-of-age gift, personally sent him an invitation letter, so naturally he was qualified to participate.

All the invitation letters were in hand, so Ye Yu naturally had no reason not to go.

After all, if the invitation letter sent by the prince himself is not to give Xue Qinghe and the Tiandou Empire face, even Dugu Bo and Ning Fengzhi will not look good.

One of them is a worshiper of the Tiandou Empire, and the other is the Prince's Teacher who is bound to the Tiandou Empire.

As for Dugu Yan and Ning Rongrong, with the relationship between Dugu Bo and Ning Fengzhi, the two daughters could easily attend the coming-of-age ceremony without even using Ye Yu's invitation letter.

However, for Ye Yu, he didn't care about anything that would be a ritual. Anyway, he just ate and drank at such banquets, and he didn't bother to make friends with other big shots.

Besides, the banquet is still one month long, but his research on soul guides has now achieved results!

Unlike the attacking spirit weapon like the Seven-Star Soul Crossbow, with the soul guide that can be continuously transformed and upgraded with the first generation, what Ye Yu is now studying is exactly his long-standing goal - the space soul guide!

The ring-shaped space soul guide bought for him by Dugu Bo was dismantled and installed by Ye Yu. After thoroughly studying the core of the space soul guide, he had been busy for nearly a month to make his own space soul guide.

What Ye Yu did was not just replicating the space ring, but restoring the entire technology, and then reducing the technical difficulty in it to the extent that it can be optimized and promoted.

The original space soul guide must use a special metal called space-time soul gold as the core to open up a stable storage space.

Losing the space-time soul gold as the stable core, even if the space ring is created, it will inevitably become a space bomb that may collapse at any time.

The materials of the optimized space soul guide are mainly sunken silver.

Although Shenyin is not the most expensive one among rare metals, it is undoubtedly the most numerous and has extremely strong plasticity.

By engraving the space soul roadmap and the energy soul roadmap into the sinking silver and building a basic soul power circulation network, ordinary Shenyin has the ability to open up a storage space, and then through forging technology, Shenyin is integrated into jewelry such as rings and bracelets.

After this, a storage soul guide with a space of 1 cubic meter was easily born in Ye Yu's hands.

The most troublesome step to eliminate the process of integrating sunken silver into jewelry is to forge sunken silver and burn the road map of the soul.

However, after proficiency in these two crafts, with Ye Yu's personal hands-on ability, he can create hundreds of them a day, which is more than enough.

The space soul guide is indeed of amazing value, but it cannot withstand Ye Yu's manufacturing speed.

If he really lets go of manufacturing, the price of space soul guides on the market will definitely plummet.

However, Ye Yu had just been involved in the field of space soul guides, and he only analyzed the prototype space soul guide of 0.5 cubic meters, which would expand the space soul guide he mass-produced to 1 cubic meter at most.

On this basis, making another breakthrough, making 10 cubic meters, 100 cubic meters or even larger national treasure-level space soul guides temporarily exceed Ye Yu's ability scope.

This is not only a material limitation, but also a lack of technical accumulation.

Just like the update of a computer, it is far from a matter of upgrading a CPU that can be done with one click, but rather a joint improvement in the operating system, graphics card and other aspects.

The technological upgrade of the space soul guide is not something that Ye Yu can achieve at present, but even so, Ye Yu who completed this project has also gained a lot.

First of all, he can achieve financial freedom!

The lighting soul guides that Ye Yu made in the past were just small-scale fights and could only make money by taking the path of small profits but quick turnover. However, the production process could not be upgraded, and the cost could not be reduced. At present, it was impossible to achieve commercialization.

On the other hand, this space soul guide is originally a high-end route. Those who can afford such things have always been either rich or noble.

Of course, I don’t mind using thousands of gold soul coins to buy a space soul guide with only 1 cubic meter.

Ye Yu has produced technology, and the Seven Treasures Glazed Glazed Sect has paid money and people. Now that the soul guide technology has declined, Ye Yu can almost be said to have monopolized all the markets of the entire Douluo Continent!

In order to test the waters, Ye Yu directly contacted Ning Fengzhi.

In front of Ning Fengzhi, Ye Yu poured a group of soul guides that made the space bracelet into him.

Ding Ding Dangdang—

A series of various bracelets collide with the desktop.

"Young Master Ye, are you... ready to enter the jewelry industry?"

Ning Fengzhi, who had just seen this scene, looked at the pile of bracelets on the table in a joking tone.

"It's not jewelry, it's a soul guide!"

Ye Yu explained lightly, as if he was afraid that Ning Fengzhi would not understand, and in front of him, he personally showed the power of these space soul guides.

As the tea cup on the table disappears, it reappears and disappears...

How could Ning Fengzhi not understand that these bracelets are all space soul guides!

"You, you, really recreate that technology?"

Ning Fengzhi picked up a bracelet and his hands were trembling. He had seen strong winds and waves, but he could not control his excitement.

Ye Yu nodded calmly and pushed the bracelet towards Ning Fengzhi, "This is the first generation of products, 1 cubic meter of space, I will give them to my uncle for a specialty!"

Ning Fengzhi, who was playing with the bracelet, was like a child who had just come into contact with a toy, constantly experimenting with the power of the bracelet.

Ning Fengzhi took a deep breath and asked the key question, "How much is the cost?"

Ye Yu smiled calmly, raised his right palm and spread his five fingers.

"Five thousand gold soul coins?" Ning Fengzhi guessed.

Ye Yu shook his head repeatedly, still spreading his five fingers.

"Is it...5000 Golden Soul Coins?" Ning Fengzhi's voice was already trembling when he said this.

On the market today, the 0.5 cubic meter space soul guide is worth 5,000 gold soul coins. The price of this 1 cubic meter space soul guide is definitely more than doubled.

If the cost is only 500 Golden Soul Coins, it means almost dozens of times the profit.

Ye Yu still smiled, shook his head lightly, and shook his five fingers with his right hand.

"Isn't it...5,50, Golden Soul Coin?"

Ning Fengzhi, who said this number, was obviously invincible to the cold and heat, but he still felt a little dry mouth and even his face was flushed.

This time, Ye Yu finally nodded. After changing the core material to sink silver, he did suppress the cost to only 50 Golden Soul Coins.
Chapter completed!