The trip to the rat's den was soon over.

Everything is in danger.

Thanks to the group of snakes attracted by Nie Yu and the others, the mutant rats could be said to have poured out of their nests, so Fang Rin and the others easily found the red spar.

When they returned to the place where Wang Ming had stayed, they didn't know how much time had passed.

And the battle outside is still in full swing.

Layers of snake corpses and rat corpses are even more foul-smelling.

"With so many mutant beast corpses, if you can bring them back, this is a great fortune!"

Wang Ming has been staring outside in the cave, his eyes are already bloodshot and excited, every mutant rat has died, every mutant snake has been divided, it is all a mutant beast, if this is exchanged for money, he Wang Ming will definitely make a fortune.

"It's good to be alive."

Fang Rin said with emotion.

Now they can't move, they can only wait for the outcome of the battle outside.

At this moment, Fang Rin's most hope is that the frozen cave will not attract the attention of both sides, otherwise, no matter which side wins, if the winning side launches an attack on their cave, with his current ice control, I am afraid it will not be able to withstand it.

"I think the beast blood is the most pity, so many mutant mice, if you can extract all their essence blood, I don't know how much evolution liquid you have to refine, it's a pity...... Pity! ”

Zhang Feng couldn't help but sigh.

"You should tell me the truth about the Evolution Liquid by now!"

Fang Rin tilted his head and asked.

"Cut...... It seems that I am deliberately concealing it, may I ask Fang Daxia, have you asked me before? Zhang Feng looked disdainful.

"Actually, the evolution liquid technology of the Qingtian Mansion is not studied by our people, speaking of which, our scientific researchers over there are all amateurs, where can it compare to your majestic city, the scientific research department over there is a state department before the end of the world, it is full of scientific research talents, that is professional, on the second day of the outbreak of the end of the world, we suddenly intercepted a piece of information from Yunjing's side, it should be launched to the whole country, it doesn't say anything, it is the production method of the evolution liquid, so let's say, the evolution liquid of our Qingtian Building, in fact, it all comes from this message. ”

It turned out that after asking Lao Wu a lot of things, they found that on Yunjing's side, there was also an evolution liquid, and there were also high-grade varieties of evolution liquid here, and the grade of the evolution liquid was exactly the same as the stratification of the transformer.

Level 1 Evolution Liquid, suitable for one-star evolutionaries.

The second-level evolution liquid is suitable for red-level two-star evolutionaries.

And so on.

And the technology here is even more powerful, the materials for making the evolution liquid are not only corpse blood and corpse crystals, but also skull blood crystals, the beast blood of mutant beasts, and even some mutant plants can become the raw materials of the evolution liquid.

Lower cost.

The money here is currently based on corpse crystals and skull blood crystals, supplemented by bartering.

A bottle of first-level evolution liquid can be sold for one and a half corpse crystals to two corpse crystals, and some remote strongholds may also sell three corpse crystals.

This price is simply the price of cabbage compared to the Supersky Tower and the Towering City.

This is of course due to the technical maturity and high-volume production here.

Ability to compress costs to a very low level.

The energy of a corpse crystal can be almost completely transformed into the evolution liquid, and the waste is very small.

Therefore, the evolution liquid here, even if the price is a half-corpse crystal, it is still a guaranteed profit.

According to the old five.

It's not that there are no forces that want to implement paper money to replace corpse crystals, after all, the benefits of controlling currency are something that many people can't refuse, but unfortunately, in this last age, paper money based on the credibility of the gang can't withstand the impact at all.

No one would exchange the corpse crystal in their hand for a piece of paper.

In particular, every day new forces are born, every day old ones die, and paper money based on the credibility of the gang is simply unsupported and cannot function.

As a result, all transactions are still made in the form of corpse crystals.

Speaking of which, we have to mention the military of the capital.

At the first moment of the last days, the army of the Northern Theater swept through Yunjing.

Yunjing was liberated the next day.

Because the Northern Theater is a well-known combat theater in China, the 38th Army and the 39th Army under its jurisdiction are all ace services, commonly known as the Long Live Army.

The country's advanced equipment and outstanding military talents are all sent to it, coupled with hard training and the normalization of exercises, so from the generals to the soldiers, they are all the elite of the elite.

Coincidentally.

At that time, they did not rest at all, but the whole theater was engaged in a large-scale live-fire performance, which lasted for several days and nights, and several of the most elite legions joined in, and at this moment, the end of the world came.

With the army heavily armed, almost no riots were formed, and they were suppressed.

The combat effectiveness of the Northern Theater of Operations was effectively preserved.

And the next day, with proper command, the soldiers were very elite and easily swept the entire Yunjing.

Even if they encounter some powerful evolutionary bodies, they will be cleared in an instant in the face of the heavy firepower of the war zone.

On the third day, the military mobilized countless missiles and artillery shells to clean up the zombies gathered around the Thousand Heavy Fire Building.

The Thousand Flames Building was also officially opened on this day.

The thousand-heavy fire wreckage building was cleared, the army cleaned up the zombies, and the materials were distributed to everyone free of charge.

Everything was on the right track.

For the survivors of Yunjing, it seems that the end of the world is coming soon.

However, just after the reclamation of the Thousand Towers was completed, all of a sudden, the military fell apart.

The vast northern theater disappeared in an instant, countless gang forces suddenly rose, and before countless survivors could react, the military was a thing of the past.

The distribution of gratuitous supplies has stopped.

The era of the jungle has arrived.

All the survivors are still at a loss, and they have been pushed away from their imaginary lives by a cruel reality, in order to live, fight zombies, fight mutant beasts, fight people, fight with the sky, and die.

This memory made Fang Rin and Zhang Feng sigh when they heard it.

And in fact, no one knows why the military suddenly fell apart.

Some people say that careerists assassinated several important leaders of the military, while others say that the military top brass was forced to disband themselves because of the pressure of survival, because a large tide of corpses broke out at that time, and the military suffered considerable losses.

Anyway, the public says that the public is reasonable, and the mother-in-law says that the mother-in-law is reasonable, and as time passes, the truth of the matter is no longer important.

The important thing is that they have to continue to fight for their lives.

……

With Zhang Feng's explanation, Fang Rin finally understood the reason.

It turned out that the evolution liquid of the Optimus Mansion was just luck, and it intercepted the message sent by Yunjing.

However, when I think of such a big price gap between the two sides, if it can be smuggled, this transaction is not small!

Zhang Feng obviously had the same plan.

The two looked at each other, and excitement was evident.