Xu Ying was walking in a small forest at this time.

The trees here are all very short, with basically no trees over five meters tall, and the number is relatively sparse.

Coupled with the bright light in the underground world, she can basically see everything in the woods clearly.

"Could that shadow just now really be..."

Her face was solemn.

If she hadn't seen it wrong, then things would be really serious.

Her caution during this period turned into a joke.

"They can't really be those lackeys..."

The more she thought about it, the more impatient she felt.

My whole heart was almost hanging.

"No, no, no... If it's really those people, that's too strange..." Xu Ying carefully observed her surroundings while thinking, "If they have discovered this place long ago, then why are humans still here?"

Has the following developed so smoothly to the present?"

After walking a few steps, I couldn't find the shadow just now, but I saw another small red fruit.

Xu Ying immediately walked over, took off one, wiped it and put it in her mouth.

"Pfft! Pah, pah, pah!"

A bitter feeling filled her mouth, and she immediately took out a bottle of water and gargled her mouth frantically.

"...Contaminated fruit!" Xu Ying gritted her teeth, "The soil here is contaminated!"

She leaned over and grabbed a handful of soil.

Judging from the color, it looks like normal soil.

Even if Li Wenxi comes here and grabs a handful of soil, she will only get the introduction of [Soil (Green)].

But Xu Ying knew that the soil had changed.

The soil underground is really being polluted!

However, it is not a completely contaminated soil, but a slightly eroded soil.

On the surface, the soil here is no different from normal soil. They are all normal soil color, not the blood-red color of completely contaminated soil on the surface.

If you just look at it, you really can't tell.

But the trace elements in it have begun to change.

"[Slightly contaminated soil]?" Xu Ying threw away the soil in her hands and stood up.

Slightly contaminated soil is the initial state of soil pollution.

Not only does its appearance look the same as normal soil, it can also be used to grow crops, fruits, etc.

The crops and fruits produced are non-toxic and edible, but the taste of these things is completely unflattering.

Under the influence of slight pollution, the taste of these edible plants will become extremely strange, and.

Sweet things become very spicy, sour things become very bitter, spicy things become very sour...

There are various variations, but they all have one thing in common... they taste terrible.

The little red fruit she just ate had a weird taste.

The small red fruit from the plant she and Li Wenxi ate together had an extremely bitter taste, several times more bitter than Huoxiang Zhengqi Water, 100% Pure.

And the small red fruit she ate this time was indeed sweet and spicy, with an extremely sour smell, which made people feel as if some mixed swill had been poured into their mouths!

"Why does this kind of thing appear underground!" Xu Ying took a sip of water again to relieve the sweetness and bitterness in her mouth.

She is very familiar with this kind of thing!

When they were still lackeys of alien invaders, for the first period of time, this was what they ate!

Although the alien invaders chose them, it was naturally impossible for them to provide food for humans, so they could only solve the problem themselves.

But at that time, the whole world was polluted, and it was almost impossible to find a piece of clean soil. They could only use less contaminated soil for planting.

At that time, everyone was complaining, and this situation lasted for three years. It was not until they found a way to improve the soil and made special fertilizer that they could use normal soil and grow normal things.

Those three years were the first three years after the war. During this period, all kinds of things that destroyed the world's outlook on life happened, impacting the spirits of all survivors. But the unpalatable food impressed her the most.

At one point, she fainted from hunger due to anorexia.

Now that she ate this kind of food again, she thought about that time again.

"elder brother……"

Xu Ying sighed and shook her head.

"Now is not the time to think about this! Something big has happened!"

The underground human base, the last piece of pure land for mankind, is about to be infected!

It seems that she was not wrong just now!

Although she only saw one leg just now, the style and color of the leg armor that flashed by made her immediately think of those lackeys.

"The order maintainers...they are really coming down!"

She looked around.

There is definitely nothing to be found now.

It’s better to go back first!

Nothing can happen to my sister-in-law!

A purple-black vortex immediately appeared under her feet, and her body sank and disappeared immediately.

In the grove, calm returned.

…

Xu Ying and Li Wenxi were sitting beside the bed.

Xu Ying has already told Li Wenxi what she just discovered.

"...If it's really like what you said, then why didn't they destroy this underground base?" Li Wenxi raised her own question.

"I don't know either, but..." Xu Ying frowned, "There are still problems here, such as being besieged by a tide of mutant beasts. This is a problem that has not existed at all in the past nine hundred years."

"Didn't the tide of mutated creatures begin a hundred years ago? In other words, it has really been discovered here a long time ago?" Li Wenxi said in surprise.

"This is also where I am confused." Xu Ying was puzzled, "If those alien invaders discovered this place a hundred years ago, then why are these people just attacked by the beast tide and still living well now?

"

"Well...I don't understand this either, but what's more important to me is..."

Li Wenxi suddenly grabbed Xu Ying's shoulders and stared at her.

"If this place had been discovered a long time ago, then wouldn't we...not have to be so careful?"

"Ah? What do you mean..."
Chapter completed!