Of course, Avril didn't say anything.

That is, according to legend, the Golden Tunnel is also a base left by aliens on Earth, and the radiation pollution in the San Diego Valley comes from the radiation pollution emitted by alien spacecraft.

However, since the survivors have not monitored any abnormal energy activities in the area in recent years, in order not to affect the morale of the army, Avril hides this section without saying it.

After serving, the team walked along the Andes for a few days. The radiation indicators displayed by the monitoring counter were getting higher and higher, and the team members had to take chemical defense suits on the ship.

You know, in the equatorial area, wearing such a dense and thick pair, even if the clothes have a temperature control system, it is too hot to bear.

Especially everyone had to travel long distances on the rugged mountain roads, which made the team members complain all the time and the speed of traveling slowed down.

Seeing the team in this state, Avril privately asked Lin Feng, asking him if he should let the team rest for a few days, or simply build an outpost on the spot.

"How far is we from the entrance?" Lin Feng asked after thinking for a while.

"There are thirty miles left." A strong mercenary replied first, looking at Lin Feng with a pleading look.

In fact, at the beginning, these unruly mercenaries did not respect this not-so-strong Chinese. In their opinion, Lin Feng must have become the leader after continuing his special relationship with Avril.

Moreover, along the way, Lin Feng and Avril slept in a sleeping bag. The high-pitched and beautiful "movement" made by Avril at night gave a deep impression on everyone.

However, over the past few days, the strong mercenaries were so tired that they stuck out their tongues like dogs.

And Lin Feng? He still had energy to make Avril 'sing' loudly every night, and he could still rush on the road with energy the next day, even busy taking care of the weak and strong man in the team.

This physical strength really made everyone look at him with admiration.

"Is this guy a robot? Don't you know you're tired?"

Such a unanimous idea came to the hearts of the mercenaries, and their attitude towards Lin Feng became respectful.

At this time, the mercenary nicknamed "Iron Head" issued a request, looking at Lin Feng, not Avril, which also shows that he recognized Lin Feng's position in the entire team.

"There are thirty miles left? That won't work." Lin Feng rejected Tietou's proposal and then said, "At our current speed, thirty miles will take two days. If we build a base here, it will take about ten days just to carry supplies. If we walk forward, we have to walk at least five miles from the entrance of the cave."

Lin Feng said decisively.

"But... if you move forward, the radiation pollution will be even more serious..."

Tietou said with some embarrassment. After all, this ubiquitous radiation pollution has made him feel very uncomfortable and frightened. He said, "I don't want to spend all the money I earned to see a doctor in the second half of my life."

"This is not a problem. What is the most effective thing to remove nuclear pollution? It is water!" Lin Feng comforted. "When we set up an outpost, we use a lot of water to wash away the contaminated land and then cover it with cement.

By then, at least in the outpost, we can take off our chemical protective suits and wait until we get back to our strength, we will proceed to the next adventure.”

"Water? And a lot of water? Where is it? Is it air transported? How long does it take to transport it?" Tietou showed a puzzled look, but Lin Feng just smiled and did not answer.

What is water? Isn’t it obtained by hydrogen and rising and burning?

These two elements have gone in the air, especially in the tropical rainforests of the Andes, where vegetation is lush, there is no shortage of these two things.

As for manufacturing hydrogen and oxygen, it is not difficult for Lin Feng. Using an air compressor to produce liquid hydrogen and oxygen under different pressures, many ordinary small businesses can do this.

Of course, it takes a lot of energy to do all this.

But Lin Feng is not short of powerful energy.

If the separated hydrogen and oxygen are further compressed, the fuel used by the space shuttle can be made - metallic hydrogen and oxygen.

These two are even more powerful energy sources.

When exploring underground, you can use them to make fuel cells, which are both convenient to carry and full of powerful energy.

So, after another two days of trek, the team finally arrived at the entrance of the Golden Tunnel, but Lin Feng had no time to observe the situation at the entrance.

Because three of the team members were really hard to be hot, they accidentally tore the chemical protective suit and were damaged by radioactive materials. At this time, they had respiratory failure.

Simple treatment cannot save the lives of these people. So on the night of arriving at the entrance of the cave, everyone hurriedly found a piece of woodland, supported the shielding network of satellites, and immediately called the helicopter to answer the helicopter.

Just when the night was at its peak, the helicopter arrived. It hovered at the treetops, lowered tens of tons of supplies, hung up the three wounded men, and then disappeared into the darkness.

After a while, another helicopter came, unloaded more than ten squatting supplies, and the last five team members were placed down, and then disappeared into the night sky.

"In the next ten days, we will never have any supplements or reserves. If we can't survive here, the helicopter will not come to pick us up."

Lin Feng looked at the helicopter that was moving away and whispered to every team member.

Because these two helicopters were developed by the survivors and relying on thermonuclear batteries as energy, they dissipate little heat and have low noise, and the fuselage is covered with radar absorbing materials.

In order to avoid others' attention, the two helicopters secretly transported Lin Feng's South American base through containers.

After this adventure flight, the two helicopters had to hide and wait until the gust of wind passed before they could be dispatched again. Otherwise, they would be caught by local radar surveillance, which would be very troublesome.

So during this period, Lin Feng and his group could only rely on themselves.

The five new team members who arrived with the plane were originally guarding supplies. The leader handed over the list of supplies, glanced at the plane that was away and asked, "I heard that we have lost three brothers?"

Yes, it's a loss.

In order to keep it secret, the fate of those mercenaries who were seriously injured and quit halfway has long been destined. The rescue posture is just to stabilize the morale of the army.
Chapter completed!