Ji Xian did not bring any food with him on this journey.

However, in the end, he managed to get useful information from Charlotte by paying the price of owing her two bags of potato chips.

The reason there were two bags of potato chips was that one bag was to offset the cost of Xia Luoxue's antibiotic injection for Ji Xian earlier.

There was also a package containing money for intelligence.

Ji Xian's eyes widened: "You mean, you injected a nanotracker into your body?"

It was fine before he didn't know, but now the thought of having countless nanotrackers in his body makes Ji Xian suddenly feel uncomfortable.

This is a psychological discomfort.

Who knows if these nanotrackers will have any adverse effects on the body?

Seeing Ji Xian's bitter face, Xia Luoxue explained again: "Don't worry, the nano trackers are actually miniature robots. If necessary, I can also choose to expel them from my body."

"Then hurry up and get these little things out of my body!" Ji Xian said without thinking.

Xia Luoxue asked, "Are you sure?"

"Of course I'm sure!"

What normal person, if they're not thinking straight, would allow some inexplicable things to exist in their body?

"However, your body is simply unable to adapt to this world. We don't know how long the antibiotics will last in your body. By then, your body will be overrun with bacteria and viruses again."

Ji Xian was no longer calm.

Xia Luoxue actually knew that his body was not adapted to this world, so does that mean Xia Luoxue already knew that he had traveled from another world?

"What do you mean?" Ji Xian asked, feigning innocence.

“What I mean is, if the nanotrackers are excreted from your body, I won’t be able to monitor your physical condition anymore.”

"ah?"

Ji Xian paused for a moment. His focus was on the first half of Xia Luoxue's sentence, while the emphasis in Xia Luoxue's words was on the second half.

It seems that Ji Xian misunderstood.

Ji Xian then asked, "Is there an effective way to prevent me from getting infected with bacteria and viruses again?"

After all, the world's technology has advanced to the point where nanotechnology can be used to detect the human body, so eliminating viruses shouldn't be difficult, right?

“Of course,” Xia Luoxue replied. “Just one injection of a gene enhancement drug, even the lowest level one, will allow your body to develop resistance.”

"Then why didn't you give me the injection?" Ji Xian blurted out.

He knew that saying this was very abrupt and a bit too forward.

But this concerns his life, so he has to ask no matter how abrupt it may seem.

At worst, he would find a way to make money to make up for Xia Luoxue.

Xia Luoxue said irritably, "Do you think gene enhancement drugs are in a wasteland, so easy to obtain? Just this one antibiotic cost me two energy points."

Upon hearing this new term, Ji Xian quickly asked, "What is an energy point?"

"It's equivalent to a currency for transactions, and you don't even know that?"

Ji Xian shook his head.

Xia Luoxue added, "I really don't know which shelter you came from; you don't even know these basic facts."

Xia Luoxue misunderstood that he came from the refuge, and Ji Xian tacitly accepted it without refuting it. After all, in this world, he also had to make up a reasonable identity.

Ji Xian was quite interested in this energy point.

Ji Xian asked, "Why is your currency called 'energy points'?"

"Because in this world, energy points are the second most useful clean energy source after electricity. They are a new type of energy that has only emerged since the end of the world. This energy was initially called bioenergy."

Ji Xian listened, feeling confused and even more bewildered.

Xia Luoxue pointed to the giant wolf that had just been killed and continued, "The reason it was initially called bioenergy is because this energy is extracted from living organisms."

As he spoke, he drew the dagger strapped to his leg and walked toward the giant wolf.

The dagger slashed a few times through the fur on the giant wolf's head. It was unclear what material the dagger was made of, but it was incredibly sharp and easily cut through the fur.

Peeling back the fur from the giant wolf's head revealed its stark white skull.

Ji Xian quickly closed his eyes, not daring to look.

As a modern man, born under the sun and living in the spring breeze, he had never seen anything so bloody before, so naturally he dared not look.

But soon Xia Luoxue's voice could be heard.

"Great, this mutated wolf has already produced energy crystals."

Ji Xian opened his eyes.

Charlotte walked over, displaying a crystal that looked like a blue diamond on her bloodied hand.

Charlotte's voice rang out again: "Since the apocalypse, the environment has changed, and ground creatures have been able to survive by mutating. They can absorb all abnormal energy in nature, including radiation, and store the energy in the back of their brains to form crystals."

"Later, a scientist named Eisen discovered that this crystal possessed enormous energy and could be extracted."

"In situations where energy is insufficient, the energy within the energy crystal can be used as a substitute for energy."

"These energy crystals have become the hard currency of today's world, and gradually evolved into money."

"However, since the energy contained in each energy crystal is different, in order to facilitate circulation, we will extract the energy from the energy crystal, define it in a standard unit, and store it in the bracelet, which becomes energy points."

As Xia Luoxue spoke, she shook the watch-like object on her wrist on her other hand.

Ji Xian understood; it was similar to getting currency as drops when defeating monsters.

The currency is stored in the bracelet, which is similar to Alipay on a mobile phone in the real world.

Under Ji Xian's curious gaze, Xia Luoxue used voice commands to control the bracelet.

The bracelet immediately emitted several beams of light, scanning the energy crystal on Xia Luoxue's other hand.

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