“This is the ecology here.”

"Every species has its place in this desert, and as long as they are not over-hunted, they will always survive."

Sitting on the camel worm, Frost Heart looked at the blue sky ahead and said.

"I once had the opportunity to see the records of the city-state library and read about human social life before the catastrophe. At that time, the whole world was full of green trees, mountains, lakes, and plains. I can only understand these words from the records in words and pictures."

"When I saw those records, I felt a bit yearning and a bit heartbroken. What I yearned for was such a beautiful world, but what I felt heartbroken about was that humans at that time did not know how to cherish it and destroyed it all."

"That's why I want to study the swarm, find their weaknesses, and completely eliminate them."

After hearing Shuang Xin's words, Lu Ban remained silent.

The reason why the wasteland world has become like this may really have little to do with human actions. The foreign lands under the gaze of the evil god cannot escape the disaster, and nothing humans do or don't do will help.

It doesn't matter, it's all the same.

As for whether the Zerg can be completely eliminated in the wasteland, Lu Ban is not sure. Whether this world can eventually eliminate the Zerg through the efforts of researchers like Frost Heart and continue its desolate but vibrant present, or be completely devoured and drained by the Zerg, leaving only endless yellow sand.

The four of them headed towards the location recorded on the map. About four days later, a small ruin appeared in their sight at the end of the horizon.

This ruin is much smaller than the city Lu Ban had seen before. At a glance, it is only about the size of a regular university campus. It looks more like a facility than a city or a town.

I don’t know if it’s because of weathering, but there are no tall buildings or large open spaces in the ruins, only low houses.

And unlike ordinary ruins, the houses here don’t seem to be damaged much, as if someone has always maintained them.

Lu Ban looked over with his [True Vision], but due to his lack of understanding, he could only use it as a telescope.

This sight surprised Lu Ban a little.

Because those buildings had no windows and were just walls on four sides. In real life, he had only seen such buildings in some research institutes that needed to be isolated.

"Where did you get the information about this location?"

Lu Ban couldn't help but ask.

"In the records in the library, some materials will record some special places. The city-state will send people to investigate. Some are ruins."

The singer answered truthfully.

"This ruin looks new, there's something wrong."

Lu Ban reminded.

"Very new?"

Shuangxin frowned and glanced at Lu Ban.

"I have good eyesight and can see clearly. Look, those buildings have no windows and the walls are not damaged. They don't look like ruins at all."

Lu Ban pointed.

“Is there anyone living?”

Setsuna guessed.

"Is there anyone in a place like this?"

The singer felt something was wrong.

"I don't think it's likely. Maybe it's a swarm of insects."

Lu Ban said that he couldn't see any insects at the moment and he couldn't be sure.

"How about this, I can run fast, so I'll go check out the situation first?"

So, he suggested that he go and take a look alone first. If there is a swarm of insects, he can use the cat to deal with it. If there is no swarm of insects, he can search this strange place.

"I'll go with you."

Frostheart said.

Lu Ban originally wanted to refuse, but after thinking about Frost Heart's abilities, he thought that she might be able to help when encountering a large number of insects, so he did not refuse.

The Singer and Shanshan stayed at a distance to guard, while Lu Ban and Shuangxin rode camel worms to the edge of the ruins.

After a closer look, Lu Ban became more certain of his previous guess. The surface of the building was only covered with a light layer of sand and dust, and there were no obvious signs of weathering. In simple terms, it must have been maintained by something.

Another thing is that the ruins also have walls.

Most cities have open roads and no walls, but this is obviously not an ordinary urban building, but more like a designated area.

Although they could get in by climbing over the wall, Lu Ban and Shuang Xin still found the main gate.

The words on the gate are no longer legible and appear to have been burned.

Walking into the wall, the distribution of these buildings appeared to be more serious than before.

In his words, it is very similar to the industrial parks or university towns in his world.

The buildings are of similar specifications and exist in groups. For example, the building near the gate is like a service hall, with only two floors and a spacious entrance.

The building a little further away, a four-story building, has no windows.

Shuang Xin had just taken two steps and was about to enter the service hall to investigate when suddenly, a sound was heard on the street.

She and Lu Ban immediately squatted down and hid.

“…Sounds familiar.”

Lu Ban leaned over to look and saw a box moving slowly on the street covered with a layer of sand.

The box was cylindrical in shape, only reaching the waist of an average person, and made of metal. In the lower part, in addition to the tracks, there was a constantly rotating wheel with a brush.

This is an advanced vacuum cleaner robot.

Lu Ban was not sure if there was such a thing in his world. He had seen those sweepers, and this thing was like a miniature version of a sweeper. It made the sound of the motor running, sweeping the streets and making them clean.

The two watched the thing slowly move away in silence.

"What's this?"

Frostheart asked, she had never seen anything like it before, it looked neither like a bug nor a living creature, more like some kind of machine.

"you do not know?"

Lu Ban asked subconsciously.

Since Frost Heart has read the information before the destruction, she should be able to think of things like sweeping robots. Why does she look so confused?

Or is it that the materials she read did not mention such details?

Thinking of this, Lu Ban began to explain.

"It's some kind of mechanical, self-acting artifact, usually used for cleaning."

He wasn't sure how much Frost Heart understood about robots, so he answered in the easiest way possible.

"Man-made, is there anyone else living here?"

Frost Heart's eyes suddenly lit up.

Lu Ban wasn't sure if there was anyone else here. He thought about it and came to another sweeping robot.

The sweeping robot detected a foreign object and stopped.

After a moment, it bypassed Lu Ban and continued forward.

“It’s quite advanced.”

Lu Ban felt that the technological level of this world before its destruction was probably slightly higher than that of the world he lived in.

He and Shuang Xin walked into the service hall and saw a large table in the middle of the hall. On the table was a set of miniature models, and the style of the models was consistent with the ruins.

Lu Ban saw some text on one side of the model that was exposed due to frequent cleaning.

"...Future City Sales Office?"

Frost Heart read out the words.