Wasteland Survivalist: A Scientific Guide to Post-Apocalyptic Survival

Gulang drove directly past Daqing City and entered Jilin Province overnight.

He was much safer once he left Wulongjiang Province.

Nowadays, it is very difficult to apply for cross-provincial case-handling funds; it is also necessary to apply for cross-provincial joint investigation and law enforcement.

I don't have that much value. With such a heavy crackdown task, I don't have the time or energy to waste.

After entering the Songyuan City area, workers could be seen replacing and repairing surveillance cameras along the way.

Just in case, Gulang began to actively move away from the city's core area.

We drove south along the provincial highway and finally entered the western suburbs of Changchun City.

The economic order in this provincial capital has been basically restored.

The streets were bustling with people.

However, prices have quietly surged more than threefold.

All kinds of daily necessities are in limited supply, and addictive substances such as tobacco, alcohol, sugar, and tea cannot be bought even with money.

In order to prevent possible pursuit, Gulang was forced to purchase another batch of living supplies.

He was heartbroken to have spent all of his last ten thousand yuan in cash.

Fortunately, the cigarettes in the car came in handy, allowing him to trade a large quantity of white sugar.

The three main sources of nutrition for the human body are carbohydrates, fats, and proteins, with carbohydrates ranking first.

Sugar is the crystallization of energy.

Sugar can be used in all places that need energy, except for biological needs.

Small in size, high in calories, hydrophilic, edible and usable, with no expiration date.

When sprinkled on wounds, it can accelerate cell healing like a superpower, and even has a bactericidal effect.

When mixed with other chemicals, it can also create a variety of unconventional and explosive weapons.

If we view reality through the lens of a fantasy world, Gu Lang prefers to call sugar "spirit stones".

The light truck, loaded with supplies, drove onto a remote rural road, where the surroundings became increasingly quiet.

The solar storm nearly destroyed all the satellites in orbit.

My phone can no longer receive GPS location signals.

Gu Lang could only roughly determine his location by using the gradually recovering base station signals.

When a mobile phone uses a mobile network, it communicates with multiple base stations.

Triangulation can be performed by utilizing the time difference or signal strength difference in signal propagation.

The so-called A-GPS positioning was originally an auxiliary function used to supplement blind spots.

Fill the gap in indoor and underground parking garage scenarios where GPS signals are unavailable.

Its positioning principle is highly dependent on the coverage density of the wireless network and the number of base stations.

In cities with high base station density, the accuracy will be higher, around tens of meters.

In rural areas with fewer base stations, the accuracy can be as low as several hundred meters.

Even under ideal conditions, it cannot meet the minimum requirements for traffic navigation.

Fortunately, with the help of an offline map, it was barely enough to determine the route.

The greatest value of the "unethical map" to Gulang now lies in the locations of height restriction poles it marks.

In many rural areas, height restriction barriers are installed to prevent large trucks from damaging roads.

With a height restriction of 2.5 meters, only private cars can pass through.

He now drives a light truck that is over 3 meters tall, and he has to consider many more things than before.

We followed the pre-planned route, making numerous twists and turns.

Gu Lang finally arrived at his campsite for the night.

This is a township health center that was recently abandoned.

It is surrounded by walls and has only two entrances, one at the front and one at the back.

The building is small in scale, making it an ideal shelter.

Gu Lang used a crowbar to loosen the chains and pushed open the entrance gate.

The car was parked in the empty garage.

Before it got dark, he began his patrol.

According to the official documents posted on the wall, this health center has been abandoned for no more than three years.

The closure date should be the year the anti-corruption campaign in the pharmaceutical industry began.

Even in this small health clinic, a "tiger" has fallen from power.

This led to a temporary shutdown and eventual abandonment.

As the flashlight beam swept across the lobby wall, the faded information sign still clearly indicated the four main areas of the first floor.

The general practice clinic is on the left, and the specialist clinic is on the right.

Passing through the corridor leads to the inpatient department, while the backyard is marked with signs for the logistics and pharmacy.

Gu Lang looked at the ceiling; part of the ceiling had fallen off.

The corroded pipes were exposed, but fortunately, there was no large-scale collapse.

Pushing open the doors to the rooms, all that could be seen was a mess on the floor.

Scattered on the ground were numerous yellowed prescription slips, registers, and empty medicine boxes.

Most of the items had been moved out, leaving only countless medical records piled up in the archives.

Upon arriving at the laboratory on the second floor, a microscope was covered in a thick layer of dust, and various reagent bottles were overturned on the worktable.

In the X-ray room, Gu Lang found a Geiger counter.

This type of equipment is commonly used to monitor environmental radiation levels.

By generating electrical pulse signals through gas ionization, it is possible to monitor X-rays and gamma rays in the environment in real time.

After replacing the two batteries, the Geiger counter's display lit up.

Gu Lang looked up at the ceiling and removed a fire smoke detector.

After smashing it a few times, the core internal components were removed.

A thin metal foil fixed inside the alarm by high-strength epoxy resin.

This special design ensures that even in extreme circumstances, internal radioactive materials will not leak.

The metal foil contains a radiation source called Br-241.

This core radiation source will continuously release alpha particles.

This causes the nearby air molecules to ionize, with some particles becoming positively charged and others negatively charged.

The ionized smoke detector also has two electrodes inside.

A stable current is formed between the positive and negative electrodes, which is equivalent to a constantly flowing "stream".

When smoke particles enter the alarm, they obstruct the flow of this "stream".

When the current weakens, the alarm circuit will immediately detect the abnormality and the alarm will sound.

This design is extremely sensitive to both visible smoke and invisible combustion products.

It can issue warnings in the early stages of a fire, buying people precious time to escape.

Fiber 241 is the most easily accessible radiation source for ordinary civilians and is also very safe.

As long as the outer shell remains intact and MF-241 is not ingested, it will not pose a threat to health.

Gu Lang placed the metal foil next to the Geiger counter.

Soon the numbers on the screen began to jump rapidly upwards.

When the number reached 1 microsievert per hour, the alarm started beeping.

"Great, it works perfectly. I'll keep it if it's good."

Gu Lang happily put the Geiger counter into his pocket.

There was also a radiation-proof lead apron in the room. Although there were some mold spots on the surface, the inner layer was intact, so it was obviously useful.

So he found a medical cart and placed all the supplies on it.

Pushing the cart, Gu Lang continued on his way.

In the pharmacy counter, he found several rolls of unopened medical gauze and bandages.

Although they have expired, they are all sealed in plastic packaging.

There was no damage, mold, or water stains on it, so it was still usable.

There was also a box of absorbent cotton balls and an old-fashioned mercury sphygmomanometer in the nurses' duty room drawer.

After a thorough search, I found several unopened bottles of iodine solution and hydrogen peroxide disinfectant in a corner.

Gu Lang loaded the items onto the light truck, and then skillfully arranged the warning cans around the truck.

Night fell heavily, enveloping this forgotten corner of the city's outskirts.