Before rebirth, he was the assistant of Mebius.

"Will the Doctor leave me too?"

Ling Feng nestled in front of Mebius and whispered.

"of course not."

"If... one day in the future, there is one thing that the doctor must do, and that thing will leave me behind, what will the doctor choose?" Ling Feng said seriously.

"A guinea pig wouldn't let me face that choice, would it?"

"...Yeah." Ling Feng responded with a slight nod.

"Doctor, my power is limited..."

"In this body, none of my abilities can be used."

If he wants to change all this, Ling Feng must first get back his power, otherwise all this will be an empty talk. Otherwise, with this body alone, Ling Feng will not even be able to handle the Herrscher and the flying high-level Honkai Beast. Let alone fight against the Herrscher of the Sea.

"Can't you use it? Then help the white mouse check it this afternoon."

"Um……"

……

"Can you feel the source of your own power? Little white mouse."

"Ability source...what is that?"

"..."

"It's the source of power. For example, the Herrscher's power source is the Herrscher's core."

"For ordinary people like Sakura who have special abilities, most of their power source comes from their own genetic chain. For people like Melnia who have stigmata, their power source is the stigmata on their bodies." Mebiu Si patiently explained.

"Mine...should be the 'Original Seal', right?"

"Is it the 'stigma' on your back? It turns out to be called this, but it is indeed quite different from the stigmata."

"The activity of the stigmata is more even and more stable, while the 'origin mark' on your back is inactive when the ability is not used."

"However, it should be exactly the opposite when used. But compared to the stigmata, it is too extreme and too unstable."

"So the reason why the power cannot be used should be that the activity is restricted..." Mebius analyzed while staring at the control group on the monitor.

"I see, you are worthy of being a doctor."

"But how to solve this 'activity problem'?"

"Look at this, little guinea pig." Mebius clicked on the two videos he had just seen under the microscope and showed Ling Feng.

"...What is this?" Ling Feng was completely dizzy after taking one look. He couldn't understand at all. Aren't the two pictures exactly the same?

"The first section is a sample of the stigma's power source."

"The second paragraph is a sample of your ability source as a guinea pig."

"The difference is that the energy source of the stigmata will remain active for a period of time when it leaves the owner, and this active time will be extended by some means."

"And little white mouse, your power source will be completely inactivated the moment it leaves you, that is, it will 'die'."

"And any means of prolonging the activity of the stigmata are useless on this." Mebius explained again.

"So this is why the Herrscher of the Sea can't kill me..." Ling Feng thought to himself.

"Does the doctor have a solution?" Ling Feng asked.

"Not yet. Human beings know very little about stigmata. What's more, this 'origin mark' on your body is the first time I understand it."

"And I just said that this 'origin mark' will be inactive once it leaves you, so there is no way to cultivate samples and can only conduct experiments on you."

"Then try a few more times. Anyway, I won't die so easily."

"Mouse, this is different. It is closely related to your self-healing ability. Once an important structure is damaged, your ability is likely to be disrupted or even disabled."

"Really? Well then..." Ling Feng could only give up after hearing this.

"By the way, doctor, is the Herrscher core of the Herrscher of the Sky in the laboratory?"

"I want to try another method." Ling Feng sat on the edge of the operating table and said.

"Only the Herrscher core of the Herrscher of Thunder."

"The core of the Herrschers are now with Velvet and Mei."

"The Herrscher core of the Herrscher of Thunder...should be able to do it, right?"

"Then give it a try. The core is in the material library next to it. Go get it yourself." After Mebius finished speaking, he got busy again.

After entering the material library and closing the door, a somewhat familiar mechanical and electronic sound came down from the ceiling.

"Ling Feng... hello, sir."

"I am 'Prometheus No. 3'. Do you need help?"

"Where is the core of the Herrscher?"

"The one closest to you is the Herrscher of Thunder core. If necessary, please move fifteen meters straight ahead and turn left. It is stored in the first black box in the second column on the counter next to the wall."

"If you want to touch the core of Herrscher, please wear protective measures first to avoid direct contact." Prometheus reminded.

Ling Feng ignored Prometheus' reminder and directly took the Herrscher Core in his hand and tried to absorb it.

But the final result still failed.

"It really doesn't work? But the reason why I can adapt to all the Herrscher cores is actually due to this 'Original Seal'." Ling Feng thought, and then frustratedly put the Herrscher Core of the Thunder Herrscher back into the box .

"Ling Feng, your adrenaline, dopamine, and endorphin secretions are continuing to decrease and are already lower than normal standards. This may lead to errors in your judgment. Please take the appropriate amount of medicine in time to avoid making judgments at important times. mistake."

"..."

"Be quiet, Prometheus."

"Ling Feng, please call me 'Prometheus No. 3' or 'No. 3', and you seem to be in a bad mood. Do you need psychological counseling? Here is the most comprehensive psychological counseling program in the world, which can be used for all kinds of people. kind……"

"Don't you have any idea why I'm in a bad mood..." Ling Feng interrupted.

"Sorry, Ling Feng, I don't understand what you mean by 'heart', but as an artificial intelligence, I should not have such an organ."

"Stop, stop, stop...shut up, I didn't ask you this."

"I'm really sorry, Ling Feng, I just thought you would be interested in the answer, so I explained it."

"..."

"No. 3, right? OK, next time I see Mei, I will ask her to revise your language program..." Ling Feng said and left the material library.

"Doctor, it failed..." Ling Feng closed the door of the laboratory and sat in a corner and said. Although he sounded very frustrated in his words, he acted as if nothing had happened.

Perhaps it was because he had no hope from the beginning, so Ling Feng was not so disappointed.

"Failure is common, don't let it affect your mood, little guinea pig." Mebius comforted appropriately, but his eyes were still staring at the test tube in his hand, as if he was witnessing some important scene, but it soon turned dark. He lowered his face and quickly recorded something in his notebook.

"...Actually, I don't expect to succeed with this method."

"Hmm~ You have learned to grow up, this is a good thing——"