♂?，，

  Two cosmic hours later, the automatic hatch on top of the high-grade sleep chamber made of black special glass opened, and Lin Fei sprang out from it with a full spirit.

  Lin Fei knew he didn't have a thorough understanding of cell biology and virology, so he didn't go to that well-equipped lab. Instead, he found a chair in this small room, sat down at the simple experimental table, opened the e-book given by Crazy Doctor, readjusted the timer on his wristwatch, and started learning.

  －－－

  Lin Fei spent the first half of the month studying in his room, reading an e-book on cellular virology, constantly using his abilities, and when he was too mentally exhausted, he would do some exercise, take a hot bath, enter the sleep chamber for two cosmic hours, and then come out to read again.

  At mealtimes, there are service staff who deliver delicious food and tidy up the room as well as change dirty linens.

  While Lin Fei lived in a room with Pandora, the black-haired girl, most of her time was spent in the laboratory, and occasionally in the dormitory reading e-books.

  Pandora lived with Lin Fei for a few days before discovering that this senior and roommate spent only a few minutes reading every day, most of the time was used to exercise and take baths, sleep.

  Pandora had the good fortune to witness Lin Fei's entire exercise routine one evening, standard squats, sit-ups and push-ups, "huffing" non-stop. As she watched Lin Fei's body, with muscles bulging with explosive force as he continued to move, Pandora's eyes were glued to him, wondering if this Lin Fei was a doctor or a special forces soldier. What was even more hateful was that Lin Fei would often come out of the bathroom after showering without locking the door, sometimes not even closing it, completely disregarding her presence.

  Pandora, the black-haired girl, had been advising Lin Fei for several days to focus on reading books, stop exercising and sleep less. However, every time Lin Fei casually agreed, he would continue with his usual routine of training his body and then sleeping in the dormitory like a warrior.

  Pandora was suspicious, wondering why Lin Fei could sleep so well, spending more than half a day in the sleeping quarters. As for this "Sleep King" senior brother, Pandora was helpless.

  It wasn't until half a month later that Lin Fei started going to the lab for experiments and occasionally asked Pandora strange medical questions, which made Pandora confirm this senior's identity as a doctor.

  －－

  On the twentieth day of being infused with cellular poison, Lin Fei looked at the red line that had spread to his shoulders and finally stopped moving after drinking the antidote he had configured, although it did not dissipate, but also alleviated the virus's spread and outbreak time.

  The antidote had some effect on Lin Fei, who studied the medical knowledge in his notes even more diligently. On the 28th day, he finally cured the first stage of cellular virus.

  －－

  With the extra two days, Lin Fei used these two days to sort out the information he had grasped about cells and viruses, analyzing the process and results of hundreds of small experiments done in the past month.

  －－

  At the end of the month, Crazy Doctor brought two bottles of water and two e-books to the laboratory, looking at Lin Fei and Pandora standing inside, waiting for him. He took a blood test on the spot and asked them how they developed the antidote.

  "The two apprentices are not bad, they have survived the first month of study. But don't relax, most geniuses fall during my second stage of study. Drink these two bottles of water and take these two books to continue studying, a month later, I hope to still see you alive." Crazy Doctor said.

  Pandora quickly picked up the bottle and drank all the poison in it. Lin Fei also picked up the bottle, reluctantly drinking it down.

  In the following month, Lin Fei became lost in more profound knowledge of cellular and viral biology, interspersed with topics on genetic variation and DNA sequence mutations.

  On the twenty-ninth day, detoxification was barely successful, while Pandora had succeeded in detoxifying on the twentieth day.

  －－

  The third month's cell toxin was drunk again by Pandora and Lin Fei.

  Lin Fei knew that he didn't have much time left, a month later the entire city of Hei Di Si would erupt with a highly dangerous virus. The more Lin Fei learned about viruses, cells and DNA mutations, the more uneasy he felt.

  The virus will erupt on schedule in a month, and the city's people, according to the system's instructions, would have all died within a month if not for this unexpected variable.

  The closed research institute of the mad scientist is located under the city of Hei Di Si, a high-risk C virus that even the most authoritative mad scientist in the medical field of Hei Di Si Research Institute cannot solve, and Lin Fei also has no confidence. Can only grasp as much medical knowledge as possible before the outbreak of the virus, do one's best, and leave the rest to fate.

  Damn it, this War God system is ridiculous. This isn't a doctor's career change task or an award from the medical community in another time and space, it's simply making people suffer and die.

  Lin Fei has been using his special ability over a thousand times every day for three consecutive months. If he hadn't obtained the Time-Space Crystal in the ancient ruins under the desert of the Innocent Star and extracted this War God Three-Minute (Fake) Special Ability, Lin Fei would have definitely died in this doctor's vocational transfer task.

  Within the third month, the virus that Crazy Doctor had implanted in Lin Fei's body was eliminated by Lin Fei on the twenty-ninth day. Lin Fei, who had narrowly escaped disaster, felt deeply fortunate.

  Pandora, the black-haired girl, although a genius in the field of viral cell DNA, stabilized the third-stage virus within her body in just fifteen days and, holding Crazy Doctor's profound electronic book, began to study even more seriously, conducting experiments.

  Lin Fei looked at Pandora and felt that this black-haired girl was becoming more and more mysterious.

  On the thirtieth day of the third month in this medical virus world, Lin Fei lay in his own room, waiting for the outbreak of the high-risk C virus.

  Suddenly, a cleaner from the research institute came in and handed Lin Fei a letter.

  "I made a huge mistake, I used my own body as an experiment, and the third-stage virus mutated in me, producing a highly dangerous C-virus. I don't want to die, but the medical skills I possess can no longer save my life. I've tried hard, experimented with various methods, but I couldn't control the mutating virus inside me."

  Having seen these words, Lin Fei had already anticipated some things. After looking at the cause of this C virus, it was related to his fellow apprentice Pandora.

  "I know that with our Master's crazy personality, after discovering the third-stage viral mutation in my body, there will be two reactions: One: They will abandon me to die on my own. Two: They will dissect me and study the mutated C virus and cells within my body."

  So I escaped, I fled from the research institute and into the city of Hades.

  I don't want to die, the medicine I've developed with my own hands can sustain me for more than a month. So, within this month, I will release the highly contagious C-virus in my body into the city of Hades. Faced with the imminent infection of the citizens of Hades City, Crazy Doctor and his senior brother will be forced to work together to save me.

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