Tian Wenxin glanced at the two scam artists walking away. If Li Feng hadn't said anything, she would never have thought that these two really understood array formation restrictions?

It should be known that in Ancestor Dragon City, the study of array formations is considered a profound magic skill. Apart from Taoist research in Dao Mountain, the Wanfa Sect also delves deeply into this path. Others exist as well, but none are as renowned as these two.

Array formations are not the usual path of cultivation. Despite their strength, those who practice array formations are generally weak, because improving in this path is difficult, and the more powerful the formation, the more complex it becomes. In battles, array formations are often like weaklings.

So, there are few people who focus solely on array formations in Ancestor Dragon City. Most practice them as a secondary skill.

Li Feng had no intention of pursuing them, and Tian Wenxin withdrew her thoughts, answering Li Feng's question: "This Duel Arena, though a place centered on duels, is actually more like a city."

"The entire Duel Arena stands thirty zhang high, with the main duel platform at its center, a stage with a diameter of a hundred meters, surrounded by tiered stands. On four sides, you can see four Demon Statue Kings. The arena can accommodate one hundred thousand spectators."

"However, what people see is just the tip of the iceberg. Besides the structures above ground, there's also an underground palace."

"This underground palace is claimed to be the Eighteen Layers of Hell, imprisoning countless slaves. Some are refugees, others come from bankrupt families, and there are those who lost everything betting—sources are varied and many."

"Here, you can even see Fierce Beasts, the Demon Clan, and even captives from the Ten Demon Hall."

"We are heading to this underground palace."

The carriage rumbled to the main gate of the Duel Arena. The thirty zhang high walls could put the ancient iron gates to shame, and the massive gateway, like the mouth of a beast, emanated a cold wind that sent chills down one's spine.

The carriage moved into the Duel Arena and stopped in a massive area resembling a Hidden Soldier Cave in the Vessel City region. Li Feng and Tian Wenxin then stepped out of the carriage.

Walking to the entrance on the other side, Tian Wenxin asked Li Feng to show his Identity Jade. Li Feng took out the jade token, and the guard took a glance.

"Are the two honored guests heading to the Duel Arena or the underground palace?"

"We're headed to the underground palace first."

Tian Wenxin replied.

The guard stepped aside, letting them walk through. The entrance had no door, but rather a wooden contraption similar to an elevator from the outside world.

"Don't worry, this is a lift," Tian Wenxin turned to Li Feng and said.

"Alright."

Unexpectedly, they could ride an elevator here. Soon, the ground trembled, and then descended quickly. Li Feng estimated it took at least ten seconds, descending seventy to eighty meters underground before the elevator stopped.

A corridor appeared ahead, with braziers lighting up both sides, casting an eerie and terrifying atmosphere throughout the place.

If it wasn't for knowing that Tian Wenxin's son was still inside, Li Feng would have thought she was digging a pit for him to fall into.

"Beyond this corridor is the Underground Palace City."

Tian Wenxin led the way, with Li Feng following closely. They passed through the corridor one after the other and quickly arrived at a door adorned with the words 'Underground Palace.' Passing through this city gate, their view suddenly opened up.

A bustling street of the Underground Palace City came into view.

The sky here was about a few dozen meters high, with sparkling beads embedded in the ceiling, shining like stars.

Large fireflies swarmed in the air, providing alternative light for the Underground Palace City. Besides this, the shops on both sides of the street had array formations lit by Spirit Stones, creating a bright and unique ambiance in the city.

"Truly a world of its own!"

Li Feng had heard about the fearsome reputation of the Duel Arena in Ancestor Dragon City, and here it was like a place that devours without a trace. It was originally built to punish rebellious individuals.

It is renowned by name and shadow alike.

And Tian Wenxin had previously said it was the Eighteen Layers of Hell, which he thought would be a cruel landscape of knives and fire. Unexpectedly, it was a scene like this.

"First-time visitors are always amazed to find such a place in Ancestor Dragon City, but after coming a few times, you know that it's a genuine hell, it's just that this hell has not yet revealed itself to you."

"Once you end up here, you'll realize the horror of hell."

"For now, we can enjoy the prosperity here."

Tian Wenxin said with a sense of implication, looking up toward the streets: "Let's go, if you want to buy and sell slaves, you need to head to the trade hall here."

At the center of the Underground Palace City, there was a building resembling a City Lord Mansion, and the trade hall was beside it, occupying a large area.

"Can I help the two honored guests with anything?" As soon as they entered the door, a shifty-eyed man with a goatee approached them.

"We want to buy some war slaves," Tian Wenxin directly stated.

Upon hearing this, the goatee asked, "How many do the honored guests wish to purchase?"

"A few would not suffice. I want to buy a few hundred. Do you have any?" Li Feng looked at the goatee and spoke.

The goatee was taken aback, turning to Li Feng with a look of doubt, as if saying don't joke.

Tian Wenxin then said, "This is our Family Head. He's not joking. We indeed wish to buy a few hundred war slaves."

The goatee looked at the richly decorated Tian Wenxin. He initially thought she was in charge, but realized he was mistaken, yanking a tuft of his goatee in surprise, jarring him back to reality.

A knowing smile appeared on his face: "Honored guests, the war slaves here aren't cheap. Even the weakest at the Magnetic Condensation Stage start at thirty to one hundred Golden Spirit Stones. There's no discount, even for large quantities."

"As for Foundation Establishment Stage war slaves, their price is ten times higher."

He rubbed his hands together as he spoke.

"Are there no Golden Core Stage war slaves?" Li Feng frowned and asked.

The goatee shook his head: "Honored guests, it's not that stronger war slaves are better. The more powerful they are, the harder they are to tame. While we do have war slaves who have reached the Golden Core, they are not ordinary slaves anymore. They have some degree of freedom."

"They only serve the Duel Arena for a certain number of years, after which they can leave. We could transfer this term, but the price would be high. An annual term costs at least ten thousand Golden Spirit Stones. To buy out the term altogether could cost tens of thousands, or at least several thousand, depending on the remaining service time."

"And that's just to compensate the Duel Arena. You'd also need to pay a separate fee for them."

"If you're still interested, I can help you make arrangements."