"This is a bit expensive..." Fei sucked his teeth after hearing this.

Although Jiang Fei's strength improvement after directly fusing the heart of the black hole can be described as a surge in his ability, Jiang Fei has not faced a life-and-death decision now, so he can't make it at all and take this risk.

"Or it's better to use the instrument first?" Jiang Fei's idea was very good. Anyway, he was not in danger now, so there was no need to take risks now. If he encountered a crisis in the future, he could completely integrate the heart of this black hole.

"Sir Captain, although this plan is also feasible, it is not a matter of fusion of the black hole heart overnight. If you really encounter danger, it may not be too late to fusion on the spot!" The meaning of 0541 is very obvious, that is, let Jiang Fei have a straightforward and fuse the black hole heart into his body.

"This..." Jiang Fei hesitated a little. Although everything was normal at the moment in the Vasari Legion's robber's nest, no one knew when the danger would happen. If it was as 0541 said, and the heart of the black hole was too late to merge, then it would be really frustrating.

However, now Jiang Fei has merged with the heart of the black hole, and he is unwilling to bear that risk, so Jiang Fei is very confused.

"If the heart of the black hole is fused, is there a way to suppress its power?" Jiang Fei came up with a compromise. Since the safe use range of the heart of the black hole is within certain conditions, if there is an instrument that can block this level, wouldn't he be in danger? If he really encounters any obstacles that cannot be overcome in the future, he can also break through this level and fight to the death.

"This is 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.

"Heart of the Black Hole, I don't know how strong I will become after fusing you!" Jiang Fei murmured in his heart, then he felt relieved and continued practicing swordsmanship.

One week later on the training ground time, the voice of 0541 resounded in Jiang Fei's heart again.

"Sir Captain, your plan is feasible. After testing, I designed a set of equipment for you to suppress the power of the heart of the black hole and allow it to provide you with energy within a safe range." 0541 said.

"Tell me 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 heart of the black hole and keep it at a lower output speed. At this speed, it can help you fill the exhausted core of will in about three days, and it can also increase your offensive and defensive ability to a certain extent."

"Three days to make up for the core of 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 will is of great significance to Jiang Fei. Almost all his strength comes 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 under safety. If it is opened to a small extent, then his ability to enter the tenth-dimensional space will be equivalent to no limit!

"Did it!" Jiang Fei nodded immediately and decided to merge with the heart of the black hole.

"In addition, the Heart of the Black Hole can also provide your attack and defense with a continuous bonus of about three million combat power when not charging the core of the will!" The sentence of 0541 was a surprise to Jiang Fei. This means that Jiang Fei could reach more than five million combat power without using the tenth dimension space alone, with his infinitely powerful realm of combat power, which is even stronger than Arikshay.

"What are you waiting for? Let's merge!" Jiang Fei shouted excitedly.

"Sir, please bring this!" 0541 did not immediately help Jiang Fei fuse the heart of the black hole, but instead teleported it to Jiang Fei's hand through a mysterious ring.

"What is this?" Jiang Fei asked.

"This is an energy stabilization device. Please be sure to wear it on your left ear. Once it is lost, stop using the black hole heart immediately. Remember this!" 0541 repeatedly instructed.

"Okay!" Jiang Fei also knew the consequences of the black hole's heart losing control, so he immediately brought the earrings up.

"You guys wear earrings, but I don't know what you think..." Jiang Fei complained while wearing earrings. He never expected that he would be fashionable.

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

"Yes!" Jiang Fei's eyes closed after entering, and he knew that 0541 would help him do everything that follows.

"Buzz..." With a light sound, the medical cabin began to operate, and at the same time, 0541 also released the heart of the black hole.

After the heart of the black hole was released, 0541 did not directly merge it with Jiang Fei, but stimulated all the energy it had reserved. These energy gathered into an energy beam and blasted towards the heart of the black hole.

"Buzz!" An energy light suddenly 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 once again burst out a traction beam, pulling the heart of the black hole to Jiang Fei's chest.

"Buzz!" Another strong light came. The black hole heart seemed to melt after touching Jiang Fei's chest, and instantly merged into Jiang Fei's body.

"Yeah!" Jiang Fei let out a muffled groan, and he felt a force that was so huge that he felt fear entered his body. After entering Jiang Fei's body, the black hole heart turned into a ball of liquid substance. The liquid kept washing in Jiang Fei's body and constantly washed his body.

"Ah..." This behavior similar to the martial artist's mouth washing and marrow removal brought Jiang Fei an unbearable severe pain, causing him to wail in pain in the medical cabin.

"Sir Captain, you are sticking to it. The Heart of the Black Hole is transforming your body so that your body can accommodate energy well." 0541 explained.

"Well..." Jiang Fei gritted his teeth and agreed, but his face had already been twisted by the severe pain.

I don’t know how long it took, a lot of black viscous substances were washed out from Jiang Fei’s body. These substances were quickly cleaned up by the decomposition beam in the medical cabin. Jiang Fei’s body, washed by energy, became purer, and it was even somewhat between biological bodies and energy bodies.

In this state, Jiang Fei's body has a very high degree of energy compatibility and can integrate more energy.
Chapter completed!