As the metal door of the elevator opened, Lin Fei found himself in the underground parking lot of a building, and the place where he appeared was inside an elevator.

Lin Fei was wearing a yellow sealed protective suit, and he was carrying a black metal box containing more than a dozen D virus test tubes.

"Lin Fei, long time no see, you're finally here." A hoarse voice came from the doorway of the underground parking lot. Lin Fei saw an electric wheelchair, slowly moving in the direction where he was.

A black-haired girl was sitting in a wheelchair, but at this moment, her face had grown a lot of pus, her eye sockets had collapsed, she looked like a zombie relative, and on her arms exposed outside her clothes, there were also circles of tumor-like lesions, she was Pandora, Lin Fei's younger sister.

"Senior brother, have you and Dr. Mad successfully developed an antidote antibody? At the moment, I have a deep viral infection, and I am already severely infected. Even if you succeed, you won't be able to save my life. Before I die, it's good to see you again, my death, this time I can be buried with at least half of the citizens of Hades, it seems that I can't enter heaven after I die, what I enter is definitely hell, or the deepest kind of hell, I am guilty, I am a demon girl, I released the demon, the demon that destroyed the city of Hades! Pandora said in a shaky voice.

"You won't be lonely on the way to hell, I'll let more people accompany you, you will become a queen when you go to hell, go with peace of mind, I didn't develop an antidote, according to the inspiration you gave me, I developed a D virus with a higher infectious and lethal rate, and in a few hours, Hades City will become a dead city." I'm your senior brother, a demon man. Lin Fei said, took out a test tube from the metal box, and threw it to the ground.

The blue liquid begins to vaporize.

"Ah---" Pandora became the first person to experience the terrifying infectious power of the D virus, and after just a few seconds, her facial features began to bleed, and she immediately stopped breathing without pain.

Lin Fei didn't stop and began to walk out of the underground parking lot. A dilapidated city unfolded in front of Lin Fei's eyes, with many scrapped vehicles parked crookedly on the streets.

Lin Fei looked around, and there were dozens of corpses of men and women who had fallen to the ground, some had rotted and flies were flying on them, and some seemed to have just fallen, and the corpses were still intact.

The D virus developed by Lin Fei this time can be transmitted by air, water, and body fluids, and the transmission is extremely strong.

Lin Fei wandered around the city, and when he finished throwing the test tube, he returned to the entrance of the underground parking lot again, entered the special password, and returned to the underground laboratory.

Subsequently, Lin Fei wore a closed protective suit, passed through the disinfection channel, and returned to the monitoring room of the underground laboratory.

Through the laboratory monitor, Lin Fei began to observe the situation of the citizens in the city of Hades.

The death toll continued to rise in an instant, and the highly contagious D virus began to break out in Hades City, and the infected citizens became a new source of infection, releasing a large amount of virus and infecting more citizens.

－－－

After six cosmic hours, the voice of the God of War system came from Lin Fei's head: "Ding Dong, the death toll in Hades City due to the D virus has reached more than forty percent, which meets the requirements for completing the mission." The host has successfully completed the Doctor Sub-career Transition task. After three seconds, the host leaves the medical world and returns to the main world. ”

Above Lin Fei's head, a golden metal light hole appeared, enveloping Lin Fei's body and sucking Lin Fei in. When Lin Fei woke up again, he found himself lying on a small bed in a simple school single room that had been transformed by the God of War system.

"The host has completed the subclass transfer task with a completion rate of 52%, completed the level A, and completed the system evaluation: The host has successfully completed the task from another perspective. Comprehended the true meaning of a war doctor, a doctor can not only save people, but also kill people. Reward for drawing A-level quest items. The host receives the title of Medical Butcher subclass.

Medical butcher sub-class title: host cell viability, cellular energy, increase by 20%, and increase the healing speed after injury by 300%.

Lin Fei's head appeared with his own surname list:

Body Muscle Strength 53

Body Cell Vitality 55 (11)

Body skeletal strength 41

Body Cellular Energy 65 (13)

Physical and mental vitality 98 (10 is the average Chengren value)

Has Ability: Time ...... God of War Three Minutes (Pseudo)

Followers: 1/4 Odent (Loyalty: 41)

Start drawing A-rank character item rewards. After the sound of the God of War system ended, a large turntable appeared in Lin Fei's mind, and a golden pointer moved quickly on the turntable, and there were hundreds of items in the turntable with their names and introductions: Vitality Ball: Increase the speed of host cells and physical and mental recovery +2.

Recovery Ring: +2 host power per minute.

Ability Ring: +10 for the five genera of the body

－－－

Finally, the pointer stopped at Lin Fei's shout, and pointed to a small square marked the "Universal Space Ring".

"The host gets a universal space ring, this space ring has been bound, only for the host himself, with the size of the space, and the host's spiritual vitality is the same as the value of the surname, at this time it is 9.8 cubic meters.

Tips: This universal space ring can hold living things, but if the host puts himself into the space ring, it will never come out again. ”

A black inconspicuous ring appeared on Lin Fei's right index finger. Lin Fei chose to hide the ring, and tried to put the items in the room into the ring, as long as his arm touched and could hold the moving one, he could use his spiritual power to put it in it and take it out.

After experimenting with the use of the Universal Space Ring, Lin Fei looked at the date table in the room, and the time displayed was actually the morning of his entry into the medical world.

Lin Fei has been in the world of medical viruses for more than three months, and the actual time has just passed a few minutes.

Lin Fei began to think back to the mission of the medical world this time, now that Lin Fei has mastered the medical knowledge of cell viruses and genetics, even if he is placed in the medical community of the Tianlong Federation, he is definitely a god-level existence. If there was no pressure of death, Lin Fei knew that he would never be able to master such a deep medical ability.

In the first three months of Hades City, Lin Fei studied hard every day, and every time he got up from the sleeping pod, he thought that if he didn't study seriously, when the C virus broke out, he would probably lie in this coffin-like sleeping pod and never get up again.

During the trip to Virus City for more than three months, Lin Fei either slept or studied every day, studying for more than 1,000 hours every day, and he still studied hard and seriously. Lin Fei felt that he had learned more in Hades City in the past three months than he had learned in the previous twenty years.

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