After returning to the planet Ipssaurus, Domingo was busy putting his private army in order, after all, the losses of this expedition were so great that they were wiped out by all but his flagship.

Jiang Fei, who was left alone, continued to return to the training ground, anyway, no one here restricted him, and this free training ground did not need to be used in vain.

Under the acceleration of thirty times, although the external time has only passed for more than a day, Jiang Fei has spent more than a month in the training ground, during this time, his body has recovered seventy-seven-eighty-eight, and the energy overdraft caused by the tenth-dimensional space has also recovered, but the core of the will is empty again.

This time, Jiang Fei consumed the energy of the Will Core more thoroughly, so that the Will Core was almost exhausted, so for a long time, Jiang Fei could no longer use the abilities brought by the Will Core, which included not only the tenth dimensional space, but also his anti-heaven realm.

In other words, Jiang Fei could only maintain a little more than 120,000 combat power for a long time, and he could not become a super master with a combat power of more than two million by opening up the realm.

"It's better that no one comes to me, just stay here at the training ground. Jiang Fei said to himself, since the time flow in the training ground was distorted, he could recover the energy in the core of his will as soon as possible here, but it was still a rather long process.

Two more days passed outside, and Domingo couldn't take care of Jiang Fei at all because he was too busy with things, so Jiang Fei spent more than two months in the training ground recuperating luxuriously.

However, in the past two months, Jiang Fei's will core has not recovered much, this time he has overdrawn too much strength, dragging an asteroid-sized Biss giant beast into the tenth dimensional space, which is still too reluctant for Jiang Fei with his current strength.

"Captain, there is good news!" On this day, 0541 brought a surprise to Jiang Fei.

"What's the good news?" Jiang Fei looked a little sullen, because he had been alone in the training ground for too long, and he was really bored.

"I've already detected the properties of that energy crystal, Captain, guess what it is?" 0541 actually sold out in a rare way.

"How do I know?

"Hehe, Captain, you're really lucky this time!" 0541 smiled.

"Is this thing valuable?" Jiang Fei asked.

"It's not just worth a lot of money, isn't it good to sell it no matter how much you give!" 0541 said with a blank look at Jiang Fei.

"What kind of treasure is that?" Jiang Fei's interest was also aroused.

"This is the Heart of a Black Hole!, or the Heart of a White Hole!" 0541 said.

"What's that, what's the use?" Jiang Fei asked curiously.

"The heart of the black hole, as the name suggests, is the core of the black hole, the core of the celestial body after the collapse, the source of the black hole's gravity!" 0541 explained.

"Really?" Jiang Fei looked at the crystal lying quietly in the ring space, this thing has no gravity!

"Captain, you don't know this, the gravity of the heart of this black hole is very huge, it is impossible to be artificially controlled, only after the black hole is transformed into a white hole, as the white hole explodes and depletes, it will really appear in the universe. 0541 explained.

"It's so complicated?" Jiang Fei was taken aback.

"Of course, you must know that the conditions for a black hole to be transformed into a white hole are very harsh, it needs to swallow a considerable amount of mass and energy, not to mention ordinary people, even if a civilization rises to the end, it may not be able to catch up with it once!

"Then what's the use of this thing?" Jiang Fei was also excited by what 0541 said, since this black hole heart is so rare, its effect is probably amazing.

"I don't know!" 0541's answer almost didn't make Jiang Fei vomit blood.

"I don't know!?" Jiang Fei rolled his eyes in anger, and co-authored it for a long time, which made him happy in vain.

"Well, it's not certain yet, according to the calculations of Namek scientists, the heart of the black hole can be used as an eternal energy source, and they only conducted artificial black hole experiments in order to obtain the heart of the black hole, but the black hole got out of control, and the entire Namek star was destroyed!" 0541 explained.

"Hey, these scientific maniacs!" Jiang Fei sighed, although many alien races have entered the Star Age of Discovery, energy still bothers them, everyone wants to obtain an eternal energy source, but the problem is that this thing does not exist at all, or no one can find it.

As the heart of the black hole that is most likely to become an eternal energy source, it has naturally become the focus of attention of many scientists, but the problem is that the black hole evolves into a white hole I don't know how long it will take, and the eruption time of the white hole is even more unpredictable.

It is precisely because no one has ever seen the real thing, so it is only theoretically speculated about the various attributes of the heart of the black hole, and it has not been confirmed, 0541 is artificial intelligence, his logical thinking is very rigorous, and the unverified data will not be provided to the captain, so for the time being, he can only say to Jiang Fei that he does not know.

"Then you hurry up and test and give me a detailed test report as soon as possible. Jiang Fei said after asking the reason.

"Yes, Captain!" 0541 nodded, and then immediately began to arrange the test work, for the test of the heart of the black hole, 0541 itself is very attentive, after all, this is the first time that the entire cosmic civilization has obtained the heart of a real black hole after historical records.

"Eternal energy source?" 0541 was busy testing the heart of the black hole, Jiang Fei was also pondering, this thing looked plain, but from 0541's description, it was a good treasure that was rare in a million years.

Jiang Fei still has a lot of ideas about the heart of the black hole, whether it can become an eternal energy source or not, but at least it can provide a large amount of energy is not wrong, after having it, Jiang Fei can at least quickly fill the energy of the core of will, and even after getting the spaceship in the future, it can be transformed through the heart of the black hole!

Thinking that the core of will will soon be able to regain energy, Jiang Fei's heart was a lot more steady, after all, the environment he was in now was a little too sinister, even if he had an infinitely strong battle intent domain, he would not dare to take it lightly, if he lost the support of the domain and only had 120,000 combat power left, then Jiang Fei could almost be said to be unable to move an inch.