There was indeed nothing in the confessional. Cen Yu went in, looked around, and searched carefully before confirming her guess.

The remaining rooms on the third basement level had no markings, as if to prevent anyone who arrived later from discovering some secret.

Each person's combat uniform has a small device that can record, in order to prevent anyone from cheating or doing anything against the rules... Cen Yu's chest recorder was naturally also turned on.

These materials will be reviewed by the school's AI after the assessment is completed, and only transferred to human staff if any problems are found.

After opening all the doors, Cen Yu found a place that looked like an office.

Like all the previous rooms, no paper documents were left behind. Judging from the marks on the ground, all the documents were burned before leaving, and the remaining non-paper documents were probably taken away by someone.

There was a sofa and a bookcase in the room... Cen Yu thought for a moment and decided to move the sofa first.

Behind the moved black sofa, there were several photos.

The photo shows the profile of a middle-aged man, with other people beside him. Perhaps because of the awkward position... all Cen Yu can see in the photo is something placed on a table that looks like a cicada shell, except that the thing is unusually large and is far from the kind of close relative of it that Cen Yu knows on Earth.

The remaining two photos also appear to have been taken in a hurry.

The photos show unconscious men and women, people busy with something, and others recording data with instruments.

There are only three photos.

Cen Yu guessed that the reason this thing appeared behind the sofa in this office was probably because the office owner was a leader.

The most dangerous place is the safest place. In order to expose this secret half-human, half-insect experiment, someone stuffed the evidence behind the sofa in the mastermind's office.

"Xiao Yu, have you finished reading?"

The voice, like a persistent ghost, appeared in Cen Yu's ears again, "We should leave here as soon as possible."

Cen Yu certainly remembered that ten years later, a half-human, half-insect monster appeared on Planet Nott... Since there were no strange phenomena on the third floor, then this thing was probably hidden on the fifth floor underground.

Cen Yu held his mecha button in his hand. "Yes, you're right."

"We should go and take a look at the fifth basement level."

...

The closer Li Chonghe got to the underground, the more obvious his discomfort became.

He subconsciously reached out and touched his neck. He could feel his glands burning, and his shoulder blades were also experiencing an even stronger pain.

Even though he took suppressants before setting off, Li Chonghe still felt his pheromones slowly overflowing.

When the two arrived at the third basement level, Wen Xihe finally looked at Li Chonghe and said, "It seems that Cen Yu disappeared on the third basement level."

He looked at Li Chonghe inquiringly, "Are you alright?"

Of course, Li Chonghe couldn't reveal everything at this moment. Even though he felt like something was about to crawl out from behind him, he calmly looked at Wen Xihe and asked, "Not bad?"

He stretched his body, as if Wen Xihe was only concerned about whether he was tired. "I've participated in similar competitions before."

Wen Xihe glanced at Li Chonghe, then looked away. "It's good that you're alright."

From the moment he entered the underground, he naturally sensed a strange pheromone...

It should be Alpha pheromones, but for some reason, Wen Xihe could only feel disgust and irritation.

As Li Chonghe approached, the pheromones that made him want to vomit became even more pronounced, accompanied by a fighting spirit—as if his instincts were telling him to kill this strange thing.

He knew that Li Chonghe was a Beta, but the closer they got to the underground, the stronger the scent of Alpha pheromones became.

He guessed what the royal family was up to... Li Chonghe's avoidance of the topic further confirmed his guess.

Wen Xi looked up, trying to find some lingering scent of Cen Yu in the air. The scent blocker that the other party usually used became more noticeable after entering the third layer of space, which meant that the other party must have stayed in the third layer of space for a long time.

They soon spotted the huge, shattered glass tank...

“Cen Yu has been here before,” Wen Xihe said.

Li Chonghe simply nodded, somewhat absentmindedly.

"Shall we split up and search?" Wen Xihe asked again.

“I’ll go downstairs and take a look,” Li Chonghe continued.

He turned and left as he spoke, his steps even a little hurried... Wen Xihe looked at Li Chonghe's back and was sure he smelled it. Just now, after they entered this room, he smelled the smell of blood.

Li Chonghe was injured.

They hadn't encountered any danger along the way, so why was Li Chonghe injured and bleeding?

Wen Xi held the communicator in her hand, but finally decided to find Cen Yu first.

...

Cen Yu arrived at the fifth underground level.

Just like in some science fiction movie, after reaching the fifth level of space.

Cen Yu saw specks of blue light.

The automatic door was still working. When he pressed the red button, the door opened and sprayed some gas on him—no danger, probably for disinfection.

He stood beside the railing, looking down at the space below.

Among the countless transparent cylinders, some were broken, and some still contained liquid, but everything was murky.

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