I'm bombarding the Supernatural World with my firearms

But here, the full power of the profession was unleashed.

Yuan Buping directly constructed numerous Gatling defense bunkers on the football field, firing continuously 24/7. Regardless of whether he was sleeping, eating, drinking water, or going to the toilet, these Gatling defense bunkers kept shooting nonstop. It could be said that Yuan Buping didn't need to do anything, as a massive amount of Experience Points was rapidly accumulating.

Even easier than a marksman.

While the firepower was more fierce than a marksman, and it required no rest, in actual combat such fixed fire bunkers were easily avoided or destroyed. But on this football field, they were like Heavenly Gods!

Moreover, with Miao providing an unlimited supply of Gatling bullets, Yuan Buping enjoyed the pleasure of automatic leveling up!

...

"You're leaving just like that?"

The Black Doctor looked back at the hospital reluctantly. It was a building he had discovered and honestly, he wished he could move it out. To him, this building was nothing short of a divine tool.

During this time, Miao and the others stayed in the football field leveling up and farming Experience Points daily. As part of the Lifestyle Occupation, he couldn't gain experience through killing monsters.

The hospital building rule was:

"The Benevolent Doctor": In this hospital, all patients undergoing surgery can be taken back in time if the doctor finds any issues during the operation, restoring the patient's body to its pre-surgery state, and then restarting the surgery.

A miracle for all doctors.

Without exaggeration, if every doctor had this rule, many times fewer people would die on the operating table each year.

And his Lifestyle Occupation of "Doctor," with a large amount of clinical surgery experience, could bring him a vast amount of Life Experience!

So...

In this period of time, with Dr. Gou's help, he captured all the survivors from the streets and brought them to this hospital, starting forced surgeries. First came a check-up, and if there was anything that needed to be excised, it was removed.

If not, a cut was made on the body and then sewn up again.

After the entire process was completed, he used time reversal to restore the patients' bodies to their pre-surgery state. Considering the patients were under anesthesia,

they didn't feel pain or suffer, and they could even cure minor issues in their bodies, such as appendicitis.

He, in turn, gained Experience Points.

It was a win-win-win.

But soon he found the experience gained this way was too little; he was so adept at suturing such simple wounds that he could stitch them up with his eyes closed, using his buttocks to hold the needle—there was no difficulty, and it brought him too little experience.

However, just then—

A survivor unwittingly stepped into a fire bar, not expecting that all who enter the building would ignite into towering flames, dying in agony amidst desperate screams.

By then, all survivors already knew he conducted free surgeries in the hospital and that he was a highly skilled surgeon. They immediately brought in a survivor with 87% severe burns and in a coma.

He immediately went to the neighboring butcher shop, stripped off all the skin from some pigs, and began preparing to carry out a skin graft on the patient.

The surgery was very difficult.

He sweated profusely for 6 hours, and after 6 hours, he barely completed the surgery successfully.

Because of this high-difficulty surgery, he gained a massive amount of Life Experience!

He even Leveled Up as a result.

And he discovered that no matter how many times he cut the skin off pig meat in the butcher's shop, the meat would refresh anew upon reentry—perhaps because the meat in the shop was "Dead Man's Flesh," not pork, it did not have a strong reaction against the patients' skin.

Thus—

The Black Doctor began his journey of farming experience.

He would randomly abduct a survivor, bring them to the hospital, administer full anesthesia, and then use a flamethrower on the patient's skin to cause severe burning. After the skin was severely burnt,

he would start the surgery.

If the surgery was successful, he gained a lot of Experience Points.

If the surgery was okay, he gained half the experience.

After surgery, he used time reversal to restore the patient's body to the pre-surgery state, not only leaving no injuries or complications but also causing only faint pain, as if they had merely had a nightmare.

This morally dubious act allowed the Black Doctor to harvest a massive amount of points.

But soon the Black Doctor found that the points gained from this surgery were becoming fewer, as he got more and more adept at it. So he began to challenge surgeries of higher difficulty,
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such as brain swaps, heart transplants, etc.

The same procedure.

Kidnap, anesthetize, operate, then reverse.

This entire process brought astronomical amounts of Experience Points to the Black Doctor, who hadn't slept the whole time, thirsting for knowledge as he practiced countless surgeries at the operating table that he never had the chance to do before.

Surgeries like coronary artery bypass, gender reassignment, and so on.

Until today, just before leaving, his "Doctor" Lifestyle Occupation level had reached an astounding 41.

Quite frankly, this level was regarded as grandmaster status within the Union, requiring a vast amount of clinical surgery experience. It was virtually impossible for a young person to reach this rank—there simply aren't enough clinical surgeries to permit a young doctor to be the principal surgeon.