623: Chapter 623 A knock came from the other side of the door.

The construction on Neptune was progressing much faster than expected.

After all, these elites from various Sects who had been conscripted were all Cultivators; in the mortal world, every one of them was a being capable of splitting mountains and cracking stone.

It was just that they had never imagined that one day they would use these skills to lay bricks, plaster walls, and build toilets.

By the third day, the foundation had already reached 2,700 meters below Neptune's crust, and the prototype of the main framework had been assembled.

Dragon Crystal Tiles refracted brilliant colors in the dim light of the Universe, Nine-Dragon Reliefs came to life under the craftsmen's chisels, and the walls made of Primordial Divine Stones were polished to a brilliant shine.

From a distance, it didn't look like a toilet at all.

It looked more like a divine temple dedicated to some Great Emperor.

Except for the plaque hanging at the entrance with gold characters on a black background—"Gate of Guixu Dedicated Public Toilet."

The characters were written by Li Heng himself; they were crooked, but every stroke contained a scalp-numbing power of Law.

It was said that when Xie Wangsheng received this plaque, he almost choked himself into a faint.

But regardless, the project was advancing steadily.

The problem occurred on the fifth day.

That "night"—Neptune had no night in the true sense, only varying degrees of gloom—the workers on their rest shift were jolted awake from their dreams by a dull, booming roar.

The roar came from the gate of gui xu.

That massive black portal floating above Neptune's polar region had originally remained in a state of deathly silent Seal.

But now, fine black smoke was seeping from the gaps in the door leaves.

"Warning! Warning! Abnormal energy fluctuations from the gate of gui xu!"

The monitoring Formation set up by Xie Wangsheng was the first to scream.

The King of Eternal Night was the first to rush to the front-line command post.

He was wearing a security uniform covered in dark gold patterns by Xiao Hei, with a safety helmet he'd forgotten to take off during construction still strapped to his head, his expression solemn.

"Security Department, all personnel in position! Dragon Clan Aerial Patrols, switch to combat Formation! Construction personnel from all Sects, retreat within the Immortal Mountain defense perimeter!"

The orders were crisp and decisive.

One had to admit that after being a worker for a few days, the King of Eternal Night had actually found a bit of a feel for organizational dispatching.

The Nine Ancient Kings quickly lined up in front of the gate of gui xu, while Xiao Hei shrank into the King of Eternal Night's collar, its single golden eye staring fixedly at the gate.

The King of Ten Thousand Dragons led the Dragon Clan in Formation high in the sky, their Dragon Might blanketing the heavens and earth.

Fang Yuan and Liu Lian stood at the front of the Immortal Mountain, their spiritual energy circulating to the limit.

Everyone was waiting.

Waiting for that door to open.

But the gate of gui xu did not open.

Instead, there was a rhythmic, tooth-gritting "thump-thump-thump" sound.

Someone was knocking on the door.

Knocking from the inside.

Three long, two short; three long, two short.

After this rhythm repeated three times, it stopped.

Then, a voice emerged from the black smoke.

The voice wasn't loud, but it clearly entered the ears of everyone present.

It was an extremely ancient language, but everyone could understand its meaning.

"Living beings outside, what are you doing?"

There was no anger in the voice, no threat, and it even carried a hint of sincere confusion.

The entire field fell silent.

The King of Eternal Night subconsciously adjusted his safety helmet and turned to look at Fang Yuan.

Fang Yuan turned to look at Liu Lian.

Liu Lian turned to look at Xie Wangsheng.

Xie Wangsheng opened his communicator and dialed Kunlun Academy.

"Dean, something is knocking on the door behind the gate of gui xu."

Five seconds later, Li Heng's voice came through.

He seemed to be chewing something.

"Ask it what's the matter."

Xie Wangsheng took a deep breath, walked to the very front of the line, and shouted toward the gate seeping black smoke from its gaps.

"Kunlun Academy is conducting routine construction. May I ask what your business is?"

There was a moment of silence behind the door.

The voice sounded again, this time with a bit of uncertainty.

"You... that thing you're building at my doorstep..."

"What is it?"

Xie Wangsheng straightened his back.

"A public toilet."

Another long silence ensued.

Fang Yuan felt like he could hear the confused emotions from the other side of the door physically warping space.

"Why?"

Xie Wangsheng looked back at the text message Li Heng had sent to the communicator and read it out word by word.

"Because our Dean feels that the Feng Shui on your side is not good and needs a house-suppressing object to improve it."

The voice behind the door vanished for a full thirty seconds.

Then, the gate of gui xu suddenly shuddered.

It wasn't the kind of shudder that meant it was about to open.

Rather, something behind the door had slammed a fist against the door panel in a fit of rage.

A tiny crack appeared on the entire black door surface, and the energy fluctuation gushing from the crack caused the King of Eternal Night and the Burning Heaven Demon Lord to retreat three steps simultaneously.

"Presumptuous!"

That voice had changed.

It was no longer confused, no longer curious.

It was replaced by a rage surging up from the ancient abyss.

"You mere ants, to dare here—"

"Oh? You're not even coming out, so what are you shouting for inside?"

A lazy voice came from above everyone's heads.

Li Heng had appeared in mid-air at some unknown point, stepping on the Void Realm with his hands in his pockets, looking down at the vibrating gate with an expression as if he were looking at a pet barking in a cage.

"Dean!"

Everyone present saluted in unison.

Li Heng waved his hand to indicate there was no need for formalities, then bent down toward the gap in the door.

"Hey, you inside, speak up a bit. The soundproofing is too good; I can't hear you clearly."

A heavy breathing sound came from behind the door.

"Who... are you?"

"The contractor."

"You want to—"

"Want to build a toilet at your doorstep."

Li Heng gave a yawn.

"What's wrong, got an objection?"

"If you have the guts, come out and say it."

There was silence behind the door again.

Li Heng waited for a few seconds and shrugged.

"Fine, then it's nothing."

He turned around and shouted to the whole field.

"Resume construction! Work overtime and finish it within three days!"

"Additionally, I'm adding a new directive."

"Install speakers in the toilet and play our academy's school song on a twenty-four-hour loop."

"The kind with the maximum volume."

Fang Yuan silently noted down this additional instruction.

The breathing behind the door became increasingly rapid.

Li Heng smiled at the gap in the door.

"By the way, our school song is quite catchy, don't worry."

He clapped his hands and walked toward the Immortal Mountain, stopping briefly as he passed by Fang Yuan.

"Fang Yuan."

"Present."

"I've checked the coordinates of that Silver Fragment; the 'Source Realm' side is quite interesting."

"Once the toilet is finished, let's pay them a visit."

Fang Yuan's heart tightened, but before he could respond, Li Heng had already sauntered off into the distance.

Less than ten minutes after he left, the tiny crack on the gate of gui xu healed itself.

But the knocking behind the door didn't stop.

The frequency changed.

It was no longer three long and two short.

Instead, it became faster and more violent, like a beast trapped in a cage frantically slamming against the bars.

Xie Wangsheng looked at the energy readings climbing on the monitoring Formation, opened the construction log, and wrote down today's record in steady handwriting.

"Day five of the Neptune branch campus construction."

"Construction progress: 72 percent."

"gate of gui xu status: Unstable."

"Remarks: The Dean has approved an additional budget for the procurement of audio equipment."

Xie Wangsheng closed the log.

The slamming behind the door suddenly doubled in intensity, and the entire surface of Neptune trembled slightly.

The monitoring Formation popped up a second warning—the Seal integrity of the gate of gui xu was decreasing at a rate of 0.3 percent per hour.