A dark shadow quickly crawled along the sewer wall, hanging upside down and defying gravity, moving with astonishing speed that even Martial Cultivators in the Qi Cultivation stage could not catch up within the complicated and cramped sewer environment.

"Move aside," Zhou Dazhi said in a deep voice, as spiritual power surged from his body, transforming into a large hand of spiritual power that reached for the shadow. The spiritual power hand ignored the complex environment within the sewer, catching up with the fleeing shadow.

"Squeak!" The six-legged shadow was caught by the spiritual power hand, and Zhou Dazhi's controlled hand squeezed it hard, crushing the shell, spraying body fluids, and emitting a shriek.

Zhou Dazhi immobilized the exploding demonic entity on the spot and quickly rushed toward it. To kill the demonic entity, either burn it with flames or purify the demonic qi within its body with exorcism talismans.

A smaller shadow silently emerged from the demonic entity's body, crawling toward the exit. Its figure was small, hidden among the murky waters, unnoticed by anyone.

Zhou Dazhi used exorcism talismans to purify the demonic aura within the demonic entity, and after purification, the slender man packed the cockroach demon, the size of a wolfhound, into a corpse bag.

"Why are you packing this?" Lu Yu walked over from the other side and asked.

He walked on the water's surface, spiritual power isolating the filthy, foul-smelling sewage beneath his feet. Lu Yu could tolerate the stench and filth, but that didn't mean he liked it; naturally, he avoided touching these things whenever possible.

The slender man glanced at Lu Yu, tied the corpse bag tightly, and said, "They're going to collect the demonic entity's bodies, probably to study them."

Zhou Dazhi took a couple of steps and noticed Lu Yu still standing in place, somewhat puzzled, and asked, "Is there a problem?"

"You missed one," Lu Yu said, retrieving the small cockroach that had crawled out of the large cockroach's body from the complicated sewage with spiritual power.

Seeing the struggling small cockroach pulled from the sewage, Zhou Dazhi was a bit surprised, having no perception of the existence of this demonic entity.

Flames burst from the small cockroach, it screamed as it was burned to ash, and then Lu Yu used flames to burn all the cockroach body fluids splattered on the surrounding walls, ensuring no remnants were left behind.

The slender man showed a surprised expression upon seeing the flames in the sewer, not expecting that Lu Yu was also a Qi Cultivation stage player.

Lu Yu and the others left the sewer and returned to the surface, where Jiang Xiaoman was comforting the frightened Zhou Jiale.

Fei Yuqing saw the three emerge, immediately walking over and asking, "How did it go?"

His gaze was unconsciously drawn to the corpse bag in Liu Tao's hand.

Zhou Dazhi said nothing, looking at Lu Yu. Liu Tao originally wanted to speak, but noticing Zhou Dazhi's attitude, he swallowed his words.

Seeing this, Lu Yu had no choice but to say, "We found demonic entities formed from rats and cockroaches, which have been cleared out. It's likely that the cockroach demon has left offspring. When killing the cockroach, a small one was found; cockroaches can produce 10 to 90 offspring at once, there can't be just one."

"The problem is, the demonic aura within the small cockroach is minimal, making it hard to detect its traces unless we're very close. Given a few days, we might see tens of thousands of cockroach demons."

After hearing Lu Yu's words, Fei Yuqing's expression became serious, "I'll report this to the higher-ups."

The young Jiang Jin and the older Xu Guangnian also left the sewer from another exit, having contacted the officers around. The officers notified Fei Yuqing via radio.

Jiang Jin and Xu Guangnian didn't find any traces of demonic entities, which instead made Fei Yuqing even more worried; after searching the sewers, only Lu Yu found traces of the small cockroach, which isn't good news.

Zhou Dazhi also said, "I suggest you send over Qi Sea stage players to thoroughly clean the sewers here. Apart from Lu Yu, none of us sensed the small cockroach. If Qi Sea stage players don't come, more Qi Cultivation stage players won't help."

Fei Yuqing gravely nodded, indicating he would relay his suggestion to the higher-ups.

Liu Tao's expression was one of shock; it was one thing for Zhou Dazhi to say he didn't sense the small cockroach, but stating that only Qi Sea stage players could deal with it implies that Lu Yu, who handled the small cockroach, equates to a Qi Sea stage.

He hadn't expected that this young man, trying to look cool with sunglasses, was so formidable.

"If there's nothing else, I'll head back," Lu Yu felt his limbs starting to weaken, the game injuries' feedback appearing, and he hurriedly said.

"Okay, nothing more now," Fei Yuqing, having relayed Lu Yu's information and Zhou Dazhi's suggestions to the higher-ups, confirmed there was nothing more for them to do.

Qi Sea stage Martial Cultivators can't be mobilized quickly, and asking them to deal with some small cockroaches might seem like an excessive measure.

The final strategy chosen was to spray strong cockroach-killing poison in the sewers and install numerous surveillance cameras inside to monitor the activity, sealing off surrounding areas and prohibiting personnel movement.

Although sealing the area and restricting personnel movement minimizes the chance of citizens encountering danger, it provides little help in preventing the demonic cockroaches from getting food.

Most of these juvenile demonic cockroaches feed on kitchen waste; unless all sewer entrances and exits can be completely blocked, the hope rests on the efficacy of the cockroach-killing poison.

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