After the sacrifice, Demon Commander Wu Shan took Ji Tianxing and others and left the altar.
Everyone walked through the wasteland where the demon soldiers gathered and rushed towards the entrance from where they came, preparing to return the same way.
However, there were two demon elites galloping towards the entrance.
After seeing Demon Commander Wushan, two elites hurriedly came up to greet him and saluted respectfully: "Master Demon Commander, His Majesty the Demon Emperor has issued an order to summon you to discuss military matters."
Suddenly hearing the news, a strange color flashed in Ji Tianxing's eyes, and he thought to himself: "The Demon Emperor has indeed come to Tianlong Pass, and our speculation is indeed true!"
Demon Commander Wushan looked at the two demon elites who were delivering the message, nodded and said: "I will go to see His Majesty the Demon Emperor later."
The two demon elites conveyed the order, turned around and left, disappearing into the dark passage.
Demon Commander Wu Shan turned to look at Ji Tianxing and others, pointed at four of the demon kings, and ordered: "You can leave now. Go back to your respective stations as soon as possible to strengthen defense and patrol."
The four demon kings accepted their orders and left quickly.
Next to Demon Commander Wu Shan, only Ji Tianxing and another Demon King were left.
"Let's go."
Demon Commander Wushan gave a deep command, led Ji Tianxing and the others into the dark passage, and rushed towards a certain magic cave as fast as the wind.
The three of them shuttled through the criss-crossing passages, and after a hundred breaths, they entered a huge underground city.
This underground city has a radius of dozens of miles and is the core area of the demon camp.
In the dark underground city, dozens of black palaces were built and many huge caves were dug.
Demon Commander Wu Shan took Ji Tianxing and the two of them to the outside of a solemn and solemn black palace covering an area of thousands of feet, and then stopped.
Outside the wide palace gate, there were thirty-six Tianyuan realm masters, divided into two teams to guard both sides of the gate.
Directly above the door, there is a huge oval mark engraved on the black wall.
That mark was mysterious and complex, with the words and symbols of demons engraved in it, as well as the patterns of ghosts, sprites and Shura.
Ji Tianxing once visited the Holy Mountain of the Demon Clan and saw the scene of the Demon Clan Palace from a distance.
He knew that there was a similar mark above the gate of Tianmo Palace.
That means that the Demon King is here in person and is unparalleled in his dignity.
Demon Commander Wushan showed his identity token to the guards, and after receiving permission, he led Ji Tianxing and the two of them through the palace gate and entered the dark palace.
The corridors, passages and walls of the palace are all inlaid with gemstone lamps, emitting a dark red brilliance.
The entire palace was shrouded in blood and filled with strong demonic energy and the cold breath of death.
Anyone who enters this palace will feel uneasy, with their heads lowered in awe and fear.
Demon Commander Wu Shan walked through several corridors and passages and arrived at the door of a secret room.
The five-foot-tall black stone door was tightly closed. Two devil portraits were carved on the door. They were lifelike, as if they were about to break out of the wall and seek out people to devour.
"You two wait here and don't move rashly!"
Demon Commander Wu Shan looked at Ji Tianxing and the two of them and ordered with a majestic expression.
After saying that, he stretched out his palms to press the devil pattern on the stone door, and used his power to activate the formation of the stone door.
After his identity was verified by the formation, the stone door slowly opened a gap.
"Whoosh!"
Demon Commander Wushan turned into a black mist, passed through the gap in the stone door, and entered the dark secret room.
Ji Tianxing and another demon king quietly guarded both sides of the stone gate, standing motionless and not daring to make any noise.
Although, Ji Tianxing couldn't see what was going on in the secret room.
But he knew very well that Demon Emperor Yougu was in the secret room, discussing military matters with Demon Commander Wushan.
He could sense that the Demon Emperor's powerful and cold aura was very low-key and restrained, and would only produce a slight fluctuation every once in a while.
"The Demon King is really sitting here, otherwise he wouldn't have built an altar here to recast the body of the ancestor Demon God.
However, the Demon King must have used some kind of magic weapon to cover up his own aura, so he could be so hidden.
No wonder the emperor, the emperor master and others have used all kinds of secret techniques, but they can't find any trace of him..."
Ji Tianxing remained calm on the surface, but his mind was filled with thoughts and thoughts.
"Although, I have completed the task assigned by the emperor and investigated the sacrificial ceremony.
But I managed to sneak into the demon camp, so it would be a pity to leave the camp like this.
No, I have to think of a way to get more information."
He made up his mind and tried to find out more information, so he racked his brains to find a way.
However, the Demon Emperor was in the secret room, and he could not act rashly, otherwise he would be in danger of exposing his identity.
With the Demon King's powerful strength, once you meet him or have close contact with him, you will definitely be able to see the flaws and reveal his identity.
After thinking for a while, a flash of inspiration suddenly flashed in his mind, and he immediately had an idea.
"By the way! When I was practicing in seclusion in the imperial palace, the master of the palace gave me a batch of training resources.
Those are the resources accumulated by the Imperial Palace over thousands of years. In addition to a large number of spiritual stones and elixirs, there are also more than twenty rare treasures and charms.
I vaguely remember that among those spells there is a Listening Talisman, which has very miraculous effects.
That magical talisman is divided into two talismans: a child and a mother. It can monitor movements thousands of miles away. It is very hidden and will not be discovered..."
Thinking back on this incident, Ji Tianxing had an idea.
He glanced at the Demon King beside the stone door and saw the Demon King standing motionless, with a stiff expression and his head lowered.
It was obvious that the Demon King was filled with fear and was in awe of the Demon King. He did not dare to look around or make a sound.
So, Ji Tianxing quietly took out a Listening Talisman and pasted it on the dark brown wall of the secret room.
This dark golden talisman is as long as a chopstick and as wide as a palm. It is made of a special material and is engraved with mysterious and weird patterns and symbols.
When the magic rune touched the wall of the secret room, it quietly slipped into the wall and quickly dissipated and dissolved.
In just a blink of an eye, the Listening Talisman disappeared.
The talisman released an invisible and immaterial power that slowly spread through the walls of the secret room without causing any movement. It was simply unnoticed by gods and ghosts.
After placing the talisman, Ji Tianxing breathed a sigh of relief when he saw that there was no abnormality around him.
He remained silent and respectful, standing outside the secret room door, waiting patiently.
After about a hundred breaths, the stone door of the secret room slowly opened, and Demon Commander Wu Shan walked out of the secret room.
"Let's go!"
Demon Commander Wushan gave the order with an expressionless face, and quickly left the palace with Ji Tianxing and the demon king.
The three of them walked through the twists and turns of the underground passage for a while, and stopped at a fork in the road.
Demon Commander Wushan wanted to carry out the Demon Emperor's order, so he turned around and left, disappearing into the darkness.
Ji Tianxing didn't waste any time, quickly returned to the ground and rushed towards the edge of the demon camp.
He wanted to return to the human camp as soon as possible and report the news to the emperor.