Lu Yu stood at the spot where the demon aura was detected, the exorcism talisman on his arm emitting a slight warmth, indicating that there was indeed a demon aura here, but it was very weak.

Spiritual Power, under the control of Spiritual Power, penetrated deep underground. With powerful Spiritual Power and a strong soul, Lu Yu's perception was very nuanced, able to discern even the smallest differences.

As his perception continued to deepen, the underground scene appeared in Lu Yu's mind. This was the second ability awakened after his Ice Jade Eyes training progress surpassed 60%, allowing perception to 'see' things.

Before this, Lu Yu's perception could only sense the external shape of objects like touch, barely able to accept vibrations, which counted as hearing, but he couldn't see specific things.

The second ability of Ice Jade Eyes—extra-sensory perception, wherever his perception extended, Lu Yu could see.

With this ability, Lu Yu no longer needed to use perspective goggles when going underground.

The gravel, pipes, and debris in the soil beneath the asphalt were clearly reflected in Lu Yu's mind, forming a 3D map.

His perception pierced through the ground, entering the sewer below. Under Lu Yu's careful inspection, he discovered an "underground tunnel" between the ground and the sewer, roughly the thickness of a child's wrist.

Without the ability of extra-sensory perception, Lu Yu would likely have mistaken it for a pipe buried underground.

Following this excavated underground tunnel, Lu Yu headed towards the closed shop nearby.

Seeing Lu Yu's movement, the three others exchanged glances and followed him.

Beep beep beep~ The Demon and Monster Aura Detector continued to sound an alarm, Jiang Xiaoman's eyes lit up as she held onto the probe, following closely behind Lu Yu. The detector incessantly sounded alarms, indicating that the demon aura below might be advancing in a line.

Previously, everyone thought the cockroach was hiding deeper, which was why they hadn't noticed the demon aura forming a line extending into the distance.

Lu Yu raised his head, looking at the closed shop door in front of him, and Fei Yuqing immediately ran over and said, "Do we need to go in? I can get someone to unlock it."

"No need," Lu Yu said lightly.

As soon as he said this, the lock cylinder within the shutter door was pushed open by Spiritual Power, and the shutter door automatically rose.

Fei Yuqing looked surprised, thinking: Are players so powerful? They can unlock things with their minds? Wouldn't this allow them to enter and exit others' homes at will?

After the shutter door was fully open, Lu Yu entered the shop. As soon as he went in, he detected a strange odor, the very strong scent of cockroaches.

Beep beep beep! The detector's alarm sounded urgently, Jiang Xiaoman's ears nearly deafened by the detector's earpiece. She hastily turned down the sound of the detector, its warning tone reduced, but it continued to vibrate intensely.

A fist-sized black cockroach passed the kitchen doorway, and Lu Yu had already perceived the scene behind the kitchen. All the food inside the kitchen had been consumed, with not a drop of oil left in the trash bin.

Fei Yuqing's face changed when he saw the cockroach in the kitchen, hurriedly saying, "Quick, catch that demon, leave one alive."

He said this while running to his car. In no time, he returned holding a glass bottle with an exorcism talisman attached to it.

The cockroaches in the kitchen had already been incinerated by Lu Yu. These cockroaches could threaten humans, but for Lu Yu, they were still too weak.

While burning the cockroaches, Lu Yu also found where they came from. These cockroaches had crawled out from the toilet pipes, which had a hole bitten through by cockroaches deep underground.

These cockroaches tunneled underground, entered the toilet pipes, and then this building, and then into the kitchen.

Spiritual Power wrapped a plastic bag, confining a remaining demon cockroach inside and placing it into the glass bottle Fei Yuqing brought. As the cockroach approached, the smell from it almost made Fei Yuqing drop the glass bottle.

After Lu Yu put the cockroach inside, he quickly sealed the glass bottle and swiftly left the shop, the smell inside making him feel a little nauseous.

After walking out of the shop, Lu Yu spread his perception widely. With perception spread out, the depth it could penetrate into the soil became shallower, but it was sufficient to see the "tunnels" dug by the cockroaches.

Seeing seven or eight branching "tunnels" underground, Lu Yu felt a bit troubled.

Following a branch and searching downwards, Lu Yu discovered yet another seven or eight branches, and this was still without reaching the end. No one knew how many branching tunnels the cockroaches had dug underground.

If there was only one cockroach per tunnel, and each main tunnel had only ten branches, at the very least, over a hundred cockroaches were already active underground in Blue Sea City.

These cockroaches would break open plastic pipes underground, crawling into places with food, which could include kitchen waste, food, small creatures, pets, or even humans.

Currently, Lu Yu hadn't seen any metal pipes being broken open, indicating that the threat posed by these small demonic cockroaches was still relatively minor.

After sharing his findings with Fei Yuqing, Fei Yuqing's face became quite grim. So many demonic cockroaches spread beneath Blue Sea City posed a great threat to the residents' safety.

Moreover, this also suggested that special and strong poisons for dealing with cockroaches were ineffective against these demonic cockroaches.

Fei Yuqing was more worried about one thing: once these demonic cockroaches grew up, the entire Blue Sea City would be enveloped in a demon aura, and by then it would be too late to do anything.

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