In the next few days, everything was calm.
Ye Xiu didn't leave the city. After all, he had to go to school every day and didn't have the time.
In school, Ye Xiu was also an influential figure. Everywhere he went, people would pay attention to him. He even received countless love letters every day, making Ye Xiu very distressed.
On the other side, on the third day after Ye Xiu transmigrated to this world, he successfully broke through to seven-star warrior level, and his strength increased again. But on the other hand, the Ten Thousand Beast Spirit Spring's recovery speed was unexpectedly slow. If he really had to wait for it to recover, Ye Xiu felt that he would have to wait at least a dozen years, or perhaps even longer.
Therefore, he had been looking for something that could increase the recovery speed of the spiritual spring these few days.
According to the introduction, the spiritual spring could devour high-energy substances to recover.
Ye Xiu tried to put some energy batteries into it. Although the spiritual spring was devoured, the recovery speed didn't increase much.
Obviously, energy batteries were not its cup of tea.
Ye Xiu could only search for others to test.
A few days later, Ye Xiu accidentally threw an unknown piece of metal into the spirit spring. Suddenly, the water level of the spirit spring rose by a shallow layer.
Although it was only a shallow layer, if the spiritual spring rose naturally, this shallow layer would be enough to take a few months.
"The spiritual spring likes to eat metal?" Ye Xiu was puzzled.
He turned his head and thought about it. That was not right either!
It wasn't like he hadn't thrown metal into it before, and he hadn't seen such an effect.
Ye Xiu then tidied up his inventory and discovered that the piece of metal that he had thrown into the spirit spring was actually a fragment of a D-grade battle sword.
In the era of beasts, in order to defend against beasts and protect their homes, humans did not hesitate to risk their lives against beasts.
However, if they fought with the beasts barehanded, humans would be at a disadvantage.
However, the alloys of the past were as fragile as tofu in front of the ferocious beasts. The powerful ferocious beasts could easily tear even the hardest alloys in the world into pieces.
Just as humans were at their wits 'end, a new type of metal that had never been discovered before was excavated from a mine somewhere.
This new type of metal had extremely high toughness, far surpassing any metal known to mankind.
Furthermore, it could easily fuse with other metal elements to form various alloys with high strength.
The first generation of superalloys was named A/grade alloy.
The strength of the A/grade alloy far surpassed the hardest alloy in the world at that time. It made a huge contribution to the battle between humans and beasts.
Later, human society gradually developed and prospered. The second generation of superalloys was also developed at that time, and it was named B-grade alloy.
B-grade alloys were five times stronger than first-generation alloys, and they were more malleable.
In the following hundreds of years, new superalloys were born.
Now, it was already the sixth generation.
D-grade superalloy was the fourth generation. It was widely used in weapons, armor, and fighter aircraft.
However, the cost of superalloy was extremely high. Even the cheapest first-generation superalloy was not something a warrior could afford.
Generally, warriors used weapons and armor made of ordinary alloys. For warriors, this level of weapons and armor was enough.
Only warlord-level warriors would be equipped with weapons and armor made of B-grade or even C-grade superalloys.
As for the weapons and armor made of D-grade superalloy, only powerful wargods can afford it.
Ye Xiu remembered that his mother, Count Ye Zhishan, had a combat sword forged from C-grade superalloy.
Among their children, only the eldest sister, Ye Xuanyu, had a weapon made of A/grade superalloy. The others, including the second sister, Ye Xiaolan, only had weapons made of ordinary alloys.
Ye Xiu himself had a battle sword forged from ordinary alloys and had learned some basic sword techniques.
However, with his current strength, weapons forged from ordinary alloys were of no help to him at all, so he had never taken them out to use.
The D-grade superalloy fragment in his hand was bought from Hunting Heart a few years ago. It was only for collection.
After all, it was only a fragment of the back of the knife. If it was the blade, it could be used as a blade. However, even if it was the blade, its value would not be high.
It was almost impossible to reforge superalloys. With the current human forging technology, it was possible to melt the first and second generation superalloys, but there was no way to do so for the third generation and above.
Whatever was forged would remain the same for the rest of his life. It could not be melted at all.
Knowing that the superalloy was useful for the recovery of the spirit spring, Ye Xiu immediately took action.
Winter City was considered a major city in the North.
Although it couldn't compare to the capital, there were three large free markets.
Ye Xiu used the money he had on hand and spent a few days visiting the three large free markets. He bought a total of sixteen superalloy fragments, eleven of which were C-grade superalloy fragments and five of which were D-grade superalloy fragments.
As for the higher-level ones, he had not seen them at all.
Weapons and armors forged from E-grade superalloy are invincible among wargods, and only Transcendents possess them.
How could it be so easy to meet?
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