"This cost is a bit big......" Jiang Fei pouted after listening to it.

Although Jiang Fei's strength improvement after directly fusing the heart of the black hole can be described as skyrocketing, but now Jiang Fei is not facing a life-and-death choice, so he can't take this risk at all.

"Why don't you use it through the instrument first?" Jiang Fei's idea is very good, anyway, he is not in any danger now, there is no need to take risks now, if he encounters a crisis in the future, he can completely fuse this black hole heart again.

"Captain, although this plan is also feasible, but fusing the heart of the black hole is not an overnight thing, if you really encounter danger, the on-site fusion may not be too late!" 0541's meaning is obvious, that is, let Jiang Fei come and directly fuse the heart of the black hole into his body.

"This ......" Jiang Fei hesitated slightly, he was in the bandit den of the Vasari Legion, although everything is normal at the moment, but no one knows when the danger will occur, if it is really like what 0541 said, when the time comes, he will hold the heart of the black hole but have no time to fuse, then he will really suffocate to death.

But now that Jiang Fei has fused the heart of the black hole, he is unwilling to take that risk, so Jiang Fei's heart is very entangled.

"If the Heart of the Black Hole is fused, then is there a way to suppress its power?" Jiang Fei came up with a compromise solution, since the safe use range of the Heart of the Black Hole is within certain conditions, if there is an instrument that can jam this level, won't he be in danger? If he really encounters any hurdles that he can't get over in the future, he can also work hard to break this level.

"That's a good idea, I'll design it first!" 0541 agreed, and then there was no news, obviously, he went to help Jiang Fei design this kind of instrument.

"Black Hole Heart, I don't know how strong I can become after fusing you!" Jiang Fei muttered in his heart, and then put his mind at ease and continued to practice his sword.

A week after the training ground, the voice of 0541 resounded in Jiang Fei's heart again.

"Captain, your plan is feasible, and after testing, I have designed a set of equipment for you that can suppress the power of the Black Hole Heart and allow it to provide you with energy within a safe range. 0541 said.

"Let's talk about the specific effect. Jiang Fei didn't want to listen to those boring data.

"Okay!" 0541 nodded, and then explained to Jiang Fei: "This instrument can suppress the power of the Black Hole Heart, so that it can maintain a low output speed, at this speed, it can help you replenish the depleted Will Core in about three days, and it can also give your offensive and defensive abilities a bonus to a certain extent." ”

"Three days to replenish the core of the will?" Jiang Fei's heart moved, with this ability alone, he had to fuse the heart of the black hole, after all, the core of the will was of great significance to Jiang Fei, and almost all of his strength came from this energy core.

If the heart of the black hole is fused, Jiang Fei can open the tenth-dimensional space with all his strength every three days when it is safe, and if it is opened by a small amount, then his ability to enter the tenth-dimensional space is equivalent to no limit!

"It's done!" Jiang Fei immediately nodded, deciding to fuse the Heart of the Black Hole.

"In addition, the Heart of the Black Hole can also provide a continuous bonus to your attack and defense equivalent to about three million combat power when you don't charge the Core of Will!" 0541's words were really an unexpected surprise to Jiang Fei, which meant that Jiang Fei could reach more than five million combat power with his infinitely strong battle intent realm alone without using the tenth dimensional space, which was even more powerful than Alexei.

"Then what are you waiting for, come and fuse!" Jiang Fei shouted with some excitement.

"Captain, please bring this!" 0541 did not immediately help Jiang Fei fuse the heart of the black hole, but teleported an earring in Jiang Fei's hand through the mysterious ring.

"What is this?" Jiang Fei asked.

"This is an energy stabilizer, please be sure to wear it on your left ear, and if you lose it, stop using the Black Hole Heart immediately, this must be remembered!" 0541 repeatedly instructed.

"Okay!" Jiang Fei also knew the consequences of the Black Hole Heart getting out of control, so he immediately brought the earrings up.

"The old man has an earring, and I don't know what you think......" While putting on the earrings, Jiang Fei complained that he never expected that he would be fashionable.

"Alright, please enter this medical pod. 0541 ignored Jiang Fei's complaints, and directly released a medical cabin.

"Hmm!" Jiang Fei closed his eyes after entering, he knew that 0541 would help him do everything next.

With a soft "buzz...... the medical chamber began to operate, and at the same time, 0541 released the heart of the black hole.

After the heart of the black hole was released, 0541 did not directly fuse it with Jiang Fei, but activated all the energy in its own reserves, which merged into a beam of energy and slammed into the heart of the black hole.

"Hum!" A burst of energy burst out from the heart of the black hole, and the heart of the black hole, which was originally dormant, was activated!

"It's now!" 0541 burst out again with a traction beam, pulling the heart of the black hole to Jiang Fei's chest.

"Hum!" was another burst of bright light, and the heart of the black hole seemed to melt after touching the skin on Jiang Fei's chest, instantly merging into Jiang Fei's body.

"Hmm!" Jiang Fei let out a muffled snort, and he felt a force so large that he felt fear enter his body, and the heart of the black hole turned into a mass of liquid substance after entering Jiang Fei's body, and these liquids continued to wash in Jiang Fei's body, constantly washing his body.

"Ah......" This act of washing the essence and marrow in the mouth of a martial artist brought Jiang Fei unbearable pain and made him wail in pain in the medical cabin.

"Captain, hold on, the Heart of the Black Hole is transforming your body so that your body can hold energy well. 0541 explained.

"Hmm......" Jiang Fei gritted his teeth in agreement, but his face was already distorted by the severe pain.

I don't know how long it has been, Jiang Fei's body was washed out of a large pile of black viscous substance, these substances were quickly cleaned up by the decomposition beam in the medical cabin, and Jiang Fei's body washed by energy became more pure, and even somewhat between living organisms and energy bodies.

Jiang Fei in this state, his body has a very high fit for energy, and there is more energy that can be fused.

"Huh!" Jiang Fei's body erupted with a burst of violent light.