Ultimate Tycoon: Building the Richest Empire with System and Heroines-Chapter 70: The three kids are not normal

The moment the group stepped past the South Gate, the heavy stone door rumbled and shut behind them with a loud thud.

"They went inside!" one of the guards shouted from outside. "We can’t let them reach the underground vault! Someone inform Master Yun, now!"

Inside, the air grew damp and colder. The walls narrowed into a long corridor, dimly lit by glowing crystals embedded into the rock. Each step echoed.

"Stay close," Gregory whispered. "The deeper we go, the more dangerous it gets."

Luke and Seraphina fell into step behind him, their eyes sharp. Ethan brought up the rear, watching their backs.

"So," Ethan asked casually, "what exactly is he hiding down here? Enough to bury this place in traps?"

Gregory didn’t turn back, but his voice was bitter. "This place is Master Yun’s lifeline. He keeps everything here—his smuggled gold, laundered money, private transaction records, and even blackmail files on top noble families."

Luke raised an eyebrow. Seraphina narrowed her eyes.

Gregory continued, "Only he and I ever knew this vault existed. And all of it... all of it was made possible because of me. Without me, he would’ve been some alley rat begging for scraps."

"You sure know how to pick your mentors," Ethan muttered.

"Focus," Gregory snapped. "From here on, step exactly where I step. There are traps—lots of them. Do not act smart. Do not try shortcuts."

They nodded.

As they advanced, the corridor split into a narrow pathway lined with odd carvings on the floor. Gregory held out his arm.

"First trap: pressure plates. Step only on the cracked ones. The smooth stones are triggers."

He demonstrated, hopping carefully across alternating tiles. One wrong step and—

CLACK!

From the ceiling, sharp iron rods dropped with a screech before resetting.

"I said follow me!" Gregory hissed as Ethan yanked his foot back just in time.

"Right, treasure-hunting rules," Ethan said. "Note to self: don’t die."

They moved on.

"Second trap," Gregory said, gesturing ahead. A section of the path had metallic holes on both sides. "Hidden dart shooters. Trip the beam, and your body gets decorated."

He pulled a small metal shard from his pocket and tossed it into the beam. Instantly, a flurry of poisoned darts zipped across the hallway, embedding into the stone with a deadly hiss.

"How do we cross?" Seraphina asked.

Gregory grinned. "We crawl underneath the beam line. Slowly. No sudden movements."

They dropped to the ground and moved inch by inch, hearts pounding. One accidental shift and they’d be pin cushions.

When they finally got up on the other side, Ethan exhaled. "I’m starting to miss the bullets."

Next was a stretch of wooden planks.

"Third trap," Gregory warned. "Fake floorboards. Some collapse into a pit of spikes."

He tapped his foot on one board. It wobbled. "Avoid these four. Use the ones with iron brackets."

They balanced themselves one by one, tiptoeing across until finally reaching the other side.

Then came the fourth trap.

A massive stone golem statue blocked the hallway.

"It looks deactivated," Luke said.

"It’s not," Gregory replied. "Motion-based. We distract it. I’ll run across and bait it to swing, then while it’s resetting, the rest of you go."

"Are you sure—"

But Gregory already dashed forward.

The golem came alive with a mechanical roar, its arms swinging wide. Gregory ducked under the first, rolled past the second, and reached the far end. The golem paused.

"Now! Move!"

Seraphina and Luke ran across in a flash. Ethan followed, barely dodging a sweeping arm.

"This guy really turned the whole place into a deadly obstacle course," Ethan muttered. "Feels like a cursed dungeon from a bad video game."

Finally, they stood before a grand metal door engraved with Master Yun’s emblem.

"This is it," Gregory said.

He pressed his palm against a sensor. Then he quickly typed a password into a hidden keypad beneath a loose brick.

With a loud hum, the door unlocked. A blast of cold air hit them as it slowly creaked open.

Inside was a massive underground chamber, filled with treasures and secrets.

Stacks of gold bars glistened under magical lights. Piles of documents were neatly arranged on a long table—ledgers, trade deals, letters with wax seals, even photos.

Blackmail material.

"This..." Seraphina whispered.

Luke scanned everything.

Ethan walked deeper inside, his steps echoing softly on the cold stone floor. As he reached the far end, his eyes widened.

Gold.

Stacks of gold bars, coins, and glittering jewelry lay packed inside opened boxes. He gave a low whistle.

"Wow... that old man really was hiding something."

At the other end of the room, Luke and Seraphina had begun rifling through the cabinets. The folders were dusty, but meticulously labeled.

Luke pulled one out, reading through the contents quickly.

"Underground auction trade routes," he muttered. "Drugs, smuggling operations... and—" he paused, his expression darkening.

He passed the folder to Seraphina.

She read it and clenched her fists. "He’s... selling our kingdom’s information to enemy countries?!"

Luke’s voice was tight. "This is treason. We need to take this straight to the king."

"I will. My father needs to see this."

Meanwhile, Ethan continued wandering through the room. His eyes scanned each cabinet until something caught his attention—an old file tucked beneath a shelf, marked with a faded royal crest.

He bent down, pulled it out, and opened it slowly.

"Royal intel..."

His face turned pale as he read further.

It was a hit list. An assassination plan. The name that jumped out at him immediately—

Princess Aurelia.

Seraphina’s elder sister.

Ethan’s jaw tightened.

He turned and ran back.

"Seraphina!"

She looked up from another document.

"I’ve got something interesting," he said, holding out the file.

"What is it?" she asked, taking it.

As they read together, a wave of fury swept over them.

Seraphina’s voice trembled, not from fear, but rage. "He... he is trying to assassinate my big sister?"

"That fucker," Ethan muttered.

Seraphina’s hands were clenched tight. "He’s going to pay."

Gregory, on the other side of the vault, was opening a smaller lockbox, scanning its contents.

CLACK. CLACK. CLACK.

Heavy boots echoed behind them.

A group of armed guards stepped in through the vault’s side entrance, surrounding the room.

And with them... a man stepped forward.

Middle-aged. Greasy hair. Scar down his face. No mask this time. His real face was twisted with a mocking smirk.

It was Master Yun.

"Well, well," he said. "Gregory. You really are trying to destroy me. Tsk tsk."

Gregory immediately stepped back, defensive. His body tensed, fists ready.

"Kill everyone except Gregory. I want him alive long enough to regret this."

The guards charged forward.

Luke and Ethan dashed to the front line. Seraphina stepped to the side, slamming a lever that caused metal drawers to rise from the floor for cover.

The battle began.

Gregory lunged at Yun, aiming a clean punch toward his jaw.

Yun ducked and slammed his palm into Gregory’s chest, sending him skidding back.

"You’re still so slow!" Yun spat.

Gregory wiped blood from his lips. "You trained me... but I’m not the same as before!"

He charged again, this time feinting low and elbowing Yun in the face. It landed. Yun staggered a step back ,but recovered immediately.

His eyes narrowed. "I’ll kill you with the very style I taught you."

He stepped forward, fists like iron. Gregory blocked one punch but took the second straight to the ribs. He coughed, staggering.

While they fought, the rest of the chamber had turned into chaos.

Luke grabbed one guard’s spear and used it to vault over two others, landing behind them and knocking both out with precise blows.

Seraphina ducked under a swing, spun, and kicked the attacker into a cabinet. "Don’t break the evidence!" she shouted.

Ethan threw a chair at a charging guard. It broke on his head. "Hey! These are probably antiques!"

More guards kept pouring in.

Ethan kicked off the wall, spun mid-air, and landed a solid strike on a man’s shoulder. Another guard swung a sword —,Luke intercepted with his forearm guard, grabbed the blade, and disarmed him with a twist.

Seraphina cracked her knuckles. "Time to make things easier."

She slammed a knee into the ground, causing a shockwave that knocked several guards back. Ethan blinked. "You’ve been holding back."

"Of course. I’m a princess, not a damsel."

Meanwhile, Gregory’s fight wasn’t going as smooth.

Yun’s blows were sharper. More precise. Every move from Gregory was met with counters.

Yun grabbed Gregory’s wrist, twisted, and slammed him into the wall.

Gregory groaned. "Still... not giving up..."

Yun laughed. "You’re just a child rebelling against his master."

Gregory stood, bloody, breathing hard. "No... I’m the student who’s going to bury his teacher."

He charged again, fists flying. Yun blocked, but Gregory didn’t stop. He swung, elbowed, kneed, even bit when needed. He was wild now. Not clean... but determined.

Yun took a few hits. Finally, he roared, picked Gregory up, and slammed him onto a table.

CRASH.

Gregory coughed blood. His limbs refused to move.

"Enough," Yun said, stepping over him.

But before he could strike again , Ethan appeared, blocking with a metal folder cabinet door.

Gregory tried to speak but passed out.

Yun’s eyes turned to Ethan. "And you... who the hell are you?"

"The guy who’s going to make you regret everything," Ethan said.

Yun raised an eyebrow. "You think three kids and a disgraced student can stop me?"

Ethan chuckled, well the three kids are not normal."

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