Gu Shuang once heard a word called muscle instinct, Gu Shuang didn't understand the meaning of this word before, and he didn't understand what muscle instinct was, but he knew it now.

From one o'clock in the afternoon to eight o'clock the next morning, Gu Shuang has been practicing the Thirteen Swords, from the beginning to the beginning of the jump to the great god, to the end of the practice, this process only took Gu Shuang nearly six hours.

By this time, Gu Shuang was already exhausted, because he had been practicing at a high speed, and every move was being performed with all his might, although his physical fitness had reached the level of thirty meters per second, he still couldn't bear it.

For more than ten hours, Gu Shuang was completely relying on his own perseverance to swing the knife, and every time he swung the knife, he felt that his arm was extremely heavy, and he felt that his arm was useless.

From the beginning, Gu Shuang could swing more than ten knives in a second because of his strength, and in the end, because his body was too tired, he could only swing one knife in a minute.

But when Chen Zong came to call him the next morning, Gu Shuang found that his hand, as if it was uncontrollable, the hand holding the knife would flick it from time to time, and he would always think about waving the knife.

"This is called muscle instinct, in the case of high-intensity knife practice, let your body completely remember this set of knife techniques, and if you practice it in the future, it will feel extremely smooth."

Chen Zong was supporting Gu Shuang at the moment, Gu Shuang felt that his hands and feet did not obey his call, if no one supported him, Gu Shuang estimated that he would not even be able to walk.

"Take a day off today, go to a masseuse, do a massage, relax your muscles, but every hour, you have to practice a little to strengthen your body's memory of knife techniques, and when you feel that your body is completely recovered, you have to carry out a high-intensity knife practice, and so on, until you completely form your own instinct and practice knife skills into your bones..."

Gu Shuang nodded weakly when he heard this.

"Senior brother, there is something else going on at the Scientific Research Institute today, so Senior Brother will leave first."

Gu Shuang's heart moved, and the black substance re-wrapped his body, giving his tired body some power to act, but the mental exhaustion still could not be erased.

"In that case, then I'll send someone to send you over there!"

"No need, I'm still holding on..."

After Gu Shuang refused the kindness of the Chen Sect to send him, he went directly to the scientific research institute, and today, Gu Shuang can go to Wenrenyu to get the vitality of the medicinal liquid.

As long as he takes it to his sister and recovers his sister, Gu Shuang can be regarded as missing a piece of heart disease.

Along the way, Gu Shuang almost controlled the black substance, dragging his body around, which was very unbearable.

"Fortunately, I have black substance, if I don't have black substance, I guess I can't crawl now, I have to find a way to recover my body quickly....."

Thinking about it, Gu Shuang came to the scientific research institute, and the dean of the scientific research institute, Gongsun Hao, seemed to be absent, so Gu Shuang went directly to Wen Renyu's office, but before Gu Shuang could go in, he was stopped by Wen Renyu's female assistant, Li Qinlian.

Li Qinlian is in her early twenties this year, with outstanding appearance, with long black and thick hair, wearing gold-rimmed glasses, and wearing a white coat.

At this time, Li Qinlian was guarding in front of Wen Renyu's office, and after seeing Gu Shuang coming, Li Qinlian came to Gu Shuang with a silver suitcase.

"Gu Shuang!"

"What's the matter?" Gu Shuang asked tiredly.

Wen Renyu didn't sleep for three days and three nights, and went back to make up for sleep. He told me to give this thing to you for him, and it contained the refined green liquor. ”

Li Qinlian handed the silver suitcase to Gu Shuang, and when she saw Gu Shuang's haggard face, she asked, "What are you doing?" Why do you look listless? ”

Gu Shuang shook his head and said, "Let's practice martial arts," Gu Shuang took the silver suitcase.

"Practicing martial arts?" Li Qinlian's eyes rolled when she heard this, as if she had thought of something, and said to Gu Shuang: "I heard that you are an immortal cultivator, have you practiced any immortal arts?" ”

Hearing this, Gu Shuang was stunned, and said in his heart, the rumors are really terrible, and now everyone on the street thinks that he is an immortal cultivator.

"Hmmm! Not bad! I have practiced a powerful immortal art..."

"Really?" Li Qinlian asked expectantly, "Then can you show me once?" ”

"Eh" Gu Shuang was sweating profusely when he heard this, and said nonsense: "The consumption of spiritual power is too great, and I can't show it, so I'll show it to you when my spiritual power recovers..."

After finishing speaking, Gu Shuang was about to leave with a silver suitcase.

Hearing Gu Shuang's words, Li Qinlian was a little lost, seeing that Gu Shuang had already walked away with the silver suitcase, Li Qinlian seemed to think of something, shouted Gu Shuang, and chased after him.

"What else?" Gu Shuang was a little strange.

"I almost forgot to tell you..."Li Qinlian propped her knees, pointed to the silver suitcase in Gu's hands and said, "In addition to the original liquid of the vitality liquid, there are also nineteen. Bottle copy of the liquid medicine. ”

"Copy the potion?" Gu Shuang was stunned for a moment when he heard this, and then looked at the silver suitcase in his hand in surprise. Originally, Gu Shuang thought that the silver suitcase only contained the original solution of the refined vitality liquid, but he didn't expect that the replica of the vitality medicine liquid was also obtained.

"Got it out so quickly?" Gu Shuang was a little surprised.

Li Qinlian nodded, stood up and said: "Its ingredient is plant energy polymerization, in fact, it is quite simple, after we analyzed its formula, we used grain essence to replace plant energy, and easily copied it, plus the old man was critically ill recently, we made a batch overnight." ”

Gu Shuang nodded when he heard this, and then asked, "How many are there in this batch?" ”

Li Qinlian replied: "A total of fifty bottles, and I gave you nineteen. bottles, and the rest will be handed over to the senators. ”

Gu Shuang nodded, and asked again, "What about the effect?" ”

"The effect is worse than the original solution..."Li Qinlian said with some regret: "The plant energy in the original solution is very pure, and we use the energy extracted from the grain extract to replace it, and the effect is worse by more than half." ”

"That's it..."Gu Shuang nodded to show that he understood, the vitality green liquid was made by Lu Yiluo herself, and if you copy it, it can have half the effect, even if it is very good.

Suddenly, Gu Shuang thought of something and asked Li Qinlian: "I remember that there are harmful substances in the original solution, after you refine it, do you know what it is?" ”

Li Qinlian shook her head and said: "Although we have refined the harmful substances in the stock solution, we can't analyze the ingredients in it, let alone what it is, what effect it has, what?" You want that? It's in the lab right now, and I'll get it for you if you want it. ”

Gu Shuang thought for a while and said, "Forget it, I just asked casually, I'll study that thing for you first, I'll go first."

"Hmmm! Good! ”

Li Qinlian nodded, then waved her hand to Gu Shuang, turned around and went back to the research room, Gu Shuang saw this and carried the silver suitcase, so he rushed to his sister's side.

When he came to his sister's ward, Gu Shuang saw his sister's attending doctor, Zhou Qingteng.

When Zhou Qingteng saw Gu Shuang coming, he greeted with a smile: "You are really diligent, come once a day." ”

Hearing this, Gu Shuang raised the silver suitcase in his hand and smiled mysteriously: "It won't be in the future."

"Oh!?" Zhou Qingteng was a little curious when he heard this: "What do you say?" ”

"Because, my sister, she will be healed today!"

Gu Shuang laughed, and then carried the box into his sister's ward, Zhou Qingteng saw this, thought about it and followed, wanting to see what magic weapon Gu Shuang had, he could save a patient in the late stage of the White Death, if Gu Shuang could really do it, it would definitely cause a sensation in the whole federation again.

Bedside

After Gu Shuang glanced at his sister, he looked at Zhou Qingteng who was waiting on the side, and then opened the silver suitcase with apprehension.

In the suitcase, there are nineteen test tubes, and a small gourd, Gu Shuang looked at the test tube, there was some emerald green liquid flowing in the test tube, and there was a string of English codes under the test tube: X-001, come to think of it, this is the code name given by the scientific research institute to the vitality of the liquid medicine, X medicine.

"Potion X?" Gu Shuang smiled, this name is quite good, after reading the test tube, Gu Shuang looked at the small gourd again, this small gourd is the small gourd that Lu Yiluo gave to Gu Shuang, which contains the original liquid of vitality liquid.

With a nervous mood, Gu Shuang took out the small gourd, then covered the suitcase and put the suitcase aside, and then helped his sister up from the hospital bed.

"Is it my brother?"

Gu Feiyan's eyelashes trembled slightly, and she woke up from her slumber.

"It's brother, here, Yan'er drank this, after drinking, your illness will be cured."

Gu Shuang opened the lid of the little gourd, and then handed it to Gu Feiyan's mouth, Gu Feiyan nodded weakly, and then opened her mouth slightly.

The bright green light bloomed from the gourd's mouth, and a fragrance echoed in the ward, Zhou Qingteng smelled this fragrance, and felt a great shock, and his brain was unprecedentedly clear, Gu Feiyan smelled this fragrance, and her skin turned from white to red at a speed visible to the naked eye. Even when Gu Shuang smelled this fragrance, he felt that the fatigue accumulated after practicing the knife all night had improved slightly.

"Yan'er, how do you feel?"

After completely giving Gu Feiyan the vibrant green liquid refined in the gourd, Gu Shuang put away the gourd and looked at his sister with anticipation.

At this moment, Gu Feiyan's body is undergoing a magical change, the most obvious is her long hair, which has changed from the original snow-white, to black from the root in an instant, and has formed a long black and thick hair in a short instant.

Then there is Gu Feiyan's skin, which was originally white and can see the vascular nerves, at this moment, after a touch of blood red spreads, in an instant, the disease is white, and the complexion returns to normal, followed by Gu Feiyan's pupils, because of the white death, Gu Feiyan's retinal nerve is damaged, but at this moment, it is miraculously restored, and in the next second, a pair of eyes as bright as stars are presented in front of the eyes of the world.

"Ahem... Ahem"

Before she could speak, Gu Feiyan only felt a strong feeling of nausea rushing to her brain, making her turn her head, and with a whoosh, she vomited a bunch of black blood.

At this moment, Zhou Qingteng, who was standing aside, froze, and after the next second, Zhou Qingteng grabbed Gu Shuang's arm and shook it vigorously in ecstasy: "Miracle! It's a miracle! I can't imagine that I, Zhou Qingteng, would be able to see a white death patient recover in my lifetime! What a miracle! What a miracle!! Hahaha! ”

Zhou Qingteng crashed out of the corridor like crazy, venting his mood excitedly.

In the ward, Gu Shuang settled down at the moment, and after smoothing Gu Feiyan's vest a few times, he helped Gu Feiyan up.

"Brother!"

Gu Feiyan looked at Gu Shuang's smiling face, her nose was sour, and she threw herself into Gu Shuang's arms.

"Brother, I saw you..."