Entering the tall building, the first thing that caught the eye was a long, dark passage, spiraling downwards, leading to a circular underground space, divided into relatively independent areas.

In the center of the space was a pool of blood-colored water, and within those partitioned areas were cages, imprisoning various souls.

Those Soul Reapers were now locking the detained souls into empty cages. In addition, some reapers stood motionless in the blood-colored pool, seemingly doing something.

"It seems this is where souls are imprisoned. There's nothing to see. Let's look elsewhere and find a way to leave here as soon as possible," Ti Hun said.

"What's the situation with the Yama's Pot? Is it still guiding the way?" Han Li nodded and asked.

"The guiding force from the pot is pointing towards that black cloud behind us," Ti Hun hesitated and said.

Han Li's eyes flickered upon hearing this, but he wasn't surprised. After thinking for a moment, he said,

"Let's split up and explore to see if there's a way to leave this crimson space. No need to search outside the city, I've already scanned it with my spiritual sense, and there's no exit."

"This secret technique should last a day and a night. There shouldn't be any problems during this time."

As Ti Hun spoke, he and Han Li returned along the same path, left the building, and then headed in two different directions.

More than half a day later, the two met again at the cage building, their expressions somewhat grave.

They hadn't found a way to leave.

"If it really doesn't work, let's try to force our way out and see if we can break this crimson space," Ti Hun said.

Han Li was about to say something when his expression suddenly changed. He led Ti Hun back to the cage space below the building, his gaze scanning the souls imprisoned in the cages.

"What's wrong, Master?" Ti Hun asked, seeing Han Li's actions.

"I suddenly thought of a way to leave this place," Han Li said with a smile.

"What way?" Ti Hun's eyes lit up upon hearing this.

"This place doesn't seem like the Underworld. These souls won't be imprisoned here forever. They should be sent to the real Underworld from here. As long as we can find their method of transporting souls, we might be able to leave this place," Han Li said.

"That makes sense. How could I not have thought of that before?" Ti Hun suddenly understood.

"It's just unclear when they will take the next action," Han Li said, his eyes slightly flickering.

"That's simple, I'll just ask someone," Ti Hun grabbed Han Li and quickly arrived at a secluded cage area.

A Soul Reaper threw the soul in his hand into a cage, turned around, and was about to walk out. As he passed a corner, an arm shot out from the darkness beside him like lightning, grabbed the Soul Reaper, and dragged him into the darkness.

Another Soul Reaper walked over, suddenly feeling a blur before his eyes, as if a companion had suddenly flashed into the corner and disappeared.

As this Soul Reaper passed the corner, he poked his head inside.

The depths of the corner were a dead end. On the ground was a shabby, dark red small cauldron, covered in dust, placed there by someone.

Besides this small cauldron, there was nothing else.

The Soul Reaper mumbled something and continued walking, not taking it to heart.

Inside the Yama's Pot space, the Soul Reaper's body was bound by chains of black light, unable to move.

"Squeak squeak,叽叽叽叽..." Although the Soul Reaper's body was unable to move, his face showed anger, and he emitted a series of strange sounds.

The sound was like ghostly wails in the deep night, or the crawling of poisonous insects, making people feel numb and extremely uncomfortable.

"Can you understand what he's saying?" Han Li looked at Ti Hun.

Ti Hun shook his head with a wry smile.

"What about you?" Han Li looked at Sun Chongshan beside him.

"Although I know a little about Underworld writing, I don't know much. I can't understand their words yet," Sun Chongshan said, shaking his head.

After speaking, he looked at Han Li and Ti Hun with curious eyes.

These two were really capable of causing trouble. In just a short while, they had captured a person from the Underworld.

"There's no other way, I'll just do a soul search directly. Even if I can't understand what they're saying, at least I can see his memory images," Ti Hun said. Then, he placed his hand on the Soul Reaper's head, and streams of dark light flew out from his palm, enveloping the Soul Reaper.

The Soul Reaper's face showed pain, and he let out a miserable scream. Under the envelopment of the dark light, his body quickly withered.

After a moment, Ti Hun released his hand.

"How is it? Did you find anything?" Han Li asked.

"Just as you guessed, the Underworld sends Ghost Generals here every so often to send the souls in the city to the Underworld. According to the time, the next person from the Underworld will come in the next few days," Ti Hun said happily.

"That's good. How do the Ghost Generals from the Underworld come over?" Han Li breathed a sigh of relief, then asked.

"They come from the black cloud behind us. At that time, a space channel will open there, and all the souls in the city will be transported away at once," Ti Hun said.

Han Li's eyes lit up upon hearing this.

It was like getting what you wanted just when you thought of it.

"By the way, will it be discovered that we captured a Soul Reaper?" Han Li immediately thought of something and asked.

"Don't worry about that. There are many Soul Reapers, and they are just members on the outermost periphery of the Underworld. They won't frequently count the number of people," Ti Hun said.

Han Li felt relieved after hearing this.

In the following days, Han Li and Ti Hun did not leave. They stayed in the Yama's Pot space and learned Underworld writing with Sun Chongshan.

Ti Hun searched the soul of that Soul Reaper and had a rough understanding of the Underworld language. After the two sides discussed, Han Li and the others quickly gained a general understanding of the Underworld language.

Seven days later, the black cloud behind the crimson building fluctuated violently, bursting out with an extremely powerful wave of power, and the entire crimson space trembled.

Countless black runes flew out of the black cloud and quickly formed a black vortex. The center of the vortex was a black channel, which looked extremely dark and seemed to lead to the most Yin and dark place in the world.

A black figure flew out of the channel. This person was wearing a black robe and holding a black club in his hand. His facial features were more upright than those of the Soul Reapers, and he looked similar to ordinary people.

The Soul Reapers in the crimson city had already gathered in front of the black cloud, escorting the souls here.

"Set off!" the black Ghost General waved the club in his hand and said in the Underworld language.

The Soul Reapers immediately threw the souls they were escorting forward upon hearing this.

A swallowing force emanated from the black channel, and all the souls flew over and disappeared into the channel.

The number of souls stockpiled in the city was not too large, and they were quickly taken away by the black channel. The black Ghost General flashed and flew into the channel.

The black channel flickered twice and quickly closed.

However, before the channel closed, two blurred shadows flew over like lightning and disappeared into it.

Han Li and Ti Hun felt as if their entire bodies were being torn apart by a huge force, and the world around them was turned upside down, but they still gritted their teeth and endured, without making a sound.

After a while, the surrounding force disappeared without a trace.

Han Li and the others appeared in a black space, and a huge abyss appeared in front of them.

The abyss was thousands of feet wide, stretching to both sides, and it was unknown how long it was. The center was an extremely deep black, and it was unknown where it led.

Rolling black gas kept emerging from the abyss. In addition to the extremely rich Yin and cold air, there was also a strange ghost aura in these black gases.

Unlike ordinary ghost aura, the ghost aura here was exceptionally pure and much heavier and thicker, as if it were a liquid.

"Is this the Underworld? It doesn't look like it," Ti Hun murmured as he looked at the scene in front of him. Then, he remembered something and waved his hand to summon the Yama's Pot.

The dark red small cauldron was now flashing with light, pointing to the bottom of the abyss.

Ti Hun's eyes lit up slightly, and he was about to take action, but Han Li grabbed him.

"Wait a moment," Han Li said calmly.

"Master, what's wrong?" Ti Hun asked strangely.

Han Li didn't look at her, but looked at the abyss in front of him, a sneer on his face. He said, "Do you think you can hide from me like this? Come out."

Ti Hun was shocked when he heard this and looked at where Han Li was looking, but he still couldn't detect anything.

"Oh, you can actually sense my existence. Your spiritual sense is very strong," a harsh voice like metal rubbing came from the front, speaking in the True Immortal Realm language.

A cloud of black gas appeared in the void in front of them and quickly grew larger, turning into a cloud of black clouds several thousand feet in size in the blink of an eye.

Countless terrifying wails of fierce ghosts came from the clouds, like countless sharp arrows stabbing into the souls of Han Li and Ti Hun.

Ti Hun groaned softly, and Han Li also frowned. The two hurriedly activated their spiritual sense to protect their souls, so they were not affected by the wails of the fierce ghosts in front of them.

The wind howled angrily near the black clouds, and black gas filled the air, obscuring the situation above.

Han Li's face was gloomy, and he waved his right hand. A dazzling golden thunder light rolled out wildly, and an extremely powerful sword Qi, carrying the momentum of shattering the void, instantly tore apart the surrounding Yin wind.

The situation on the black cloud was clearly presented in front of Han Li and the others.

They saw that the top was densely packed with ghosts, numbering two or three thousand.

These ghosts were exactly the same as the one Ti Hun had devoured before, and their auras were basically the same. They all held black three-pronged steel forks and were arranged in a neat square formation, like a well-disciplined army.

Han Li ignored the other ghosts and focused his gaze on a figure in the front, a trace of vigilance flashing in his eyes.

This person was a middle-aged man, slender and looked no different from ordinary people, except that his eyes flickered with frightening blood, and he was grinning at Han Li.

He was wearing a black robe that seemed illusory, fluttering in the wind. All kinds of terrible ghost shadows were constantly protruding from under the black robe. Behind him was a Zhang-long black war spear, flashing with a layer of black fierce light, and even exuding a soaring fierce aura, which even Han Li felt was very dangerous.

"Who are you, and why are you ambushing us here, trying to sneak attack us?" Han Li sized the man up and said slowly.