The "secret city" hidden underground has always been a topic of conversation.

Some cities are overpopulated and have gone underground, while others are shelters from nuclear strikes, allowing people to survive for months even if all the buildings above ground are destroyed.

However, even though modern technology far exceeds that of ancient times, the largest underground cities of mankind were built by ancient people.

According to records, the reason why the ancients built underground cities was because the climate on the surface was too harsh, so they had to be moved underground. However, in Zhang Luo's view, this unreliable reason is obviously nonsense, after all, if it is because of the bad climate, as long as you move to other places, there is no need to spend a lot of trouble building underground.

-- There must be other, unknown reasons why human beings want to build underground cities.

And now, Zhang Luo, who has entered a real "dungeon", almost knows what that reason is.

"This is the city of the 'Old Gods'? Why is it so big? ”

Led by the wheel of fortune, walking down the brown slate-paved streets, Vilph could hardly believe his eyes.

- The top of the cavern above him was pitch black, like a deep night sky, but there were several dazzling flames that seemed to be alive, floating over the city, reflecting this mysterious underground city.

What looks like a city that looks very small in the distance is surprisingly large when you get closer. There is no edge in sight, and it feels like you have entered a giant city in the primeval era that is even bigger than Paris on the ground.

Staggered in the cross. On both sides of the street, where there is no end in sight, square houses with crimson walls stand. It looks a bit like the European medieval architectural style.

Although the house does not look dilapidated, it looks like something is living in it. Strangely, there was no sound coming from the houses with closed doors and windows, and no "creatures" came out.

This reddish underground city was shrouded in complete silence, and no sound could be heard at all except for the footsteps of Zhang Luo and the others.

"What's wrong?" The pale ghost "Wheel of Fortune" turned his head and looked at Zhang Luo, who was standing motionless in the middle of the road like a statue.

"It's fine, probably a delusion."

Zhang Luo raised his head as he spoke. Returning to his usual state, he stood in front of a huge column twenty meters high on the side of the road with great interest, staring at the dense words engraved on it.

The words, a combination of straight lines and curved stripes, were clearly not any of the languages ever spoken by humans, nor were they the "devil's language" that we had just seen for the first time.

However, for Zhang Luo, it is not a problem to read the content of the text:

"Praise be to the god of fire, the one who brings fire to the world. We are willing to be mortals. Serve you until your body decays. ”

Standing in front of the pillar with him, Saya didn't say anything, but Welff asked first, "What does this mean?" ”

Obviously, the demon couldn't read the words on the pillar. After Zhang Luo explained it to her, she finally understood:

"Bring the flames? Could it be that you mean 'salary king'? ”

"I think what appears here is obviously referring to something else." Zhang Luo smiled. Didn't say much, just followed the ghost's pace. Continue to walk towards the interior of the city.

From ancient times to the present, human beings have never stopped worshipping "flame". In most myths, there are references to fire:

-- In ancient Chinese mythology, Zhu Rong was revered as the god of fire. In Greek mythology, it was Prometheus who stole the fire and gave it to humans, so that humans could get the real fire.

However, Zhang Luo knew very well that it was obviously impossible for the two of them to appear in the records of this kind of underground city, but other characters......

Following the wheel of fortune through several streets, the trio finally entered a large circular plaza.

The diameter of this place, which is at least a kilometer in diameter, is engraved on the reddish-brown ground of the square, and in the center, a giant sculpture can be seen, in the shape of a bright red ball, which seems to be burning with flames, shining brightly.

"It's ...... The sun? Vilf stared at the "Fireball" sculpture in the center of the square and couldn't help but let out a sound of surprise.

The ghost floating in front did not answer her question, but suddenly stopped and said, "Here we are." ”

"Well, I probably already know who the 'monster' is that lives here." Zhang Luo smiled.

Even though the Wheel of Fortune has not revealed the identity of the "monster", Zhang Luo has already understood who he is about to face.

According to ancient legends, the "origin" of the worship of the sun god and the god of fire by later generations probably originated from the worship of a certain god by the inhabitants of a lost continent such as Atlantis.

And the name of that god is recorded in the "Cthulhu Mythos", a legendary old ruler, also known as the primordial fire god, the one who inhabits the flames. In other words, -

"Master Ketugaya, I brought them here."

Under the gaze of Zhang Luo and the others, the wheel of fate bowed respectfully, and then suddenly disappeared.

At the same time, a clear and calm "voice" that could not identify the gender suddenly sounded in everyone's consciousness:

"Welcome."

With this sound, the temperature in the square rose sharply, from only about ten degrees Celsius to nearly forty degrees at once.

Then, an incomparably dazzling light appeared over the square without warning.

――Exactly like the sun sculpture below, what appeared in Zhang Luo's sight was a "star" as bright as the sun composed of countless fireballs!

Even though Zhang Luo immediately took his eyes off the thing, his retina was burned instantly, and there was a tingling pain in his eyes. Fortunately, it has the self-healing effect of the "God-made body", otherwise the eyesight will definitely deteriorate severely, and I will probably have to wear glasses for the rest of my life in the future.

Although his eyes were almost blinded, Zhang Luo didn't care about his injuries at this time, and just immediately asked:

"You're Ketugea? I've heard that Ketugea is a beautiful girl. ”

The ball of light floating in the center of the square did not rebuke him for his rudeness. Just answered his question with a "voice" that suddenly sounded in his mind:

"Here, that posture is not appropriate."

"Oh, so what did you do with us? If I'm not mistaken, this so-called tarot card game should be a screening mechanism, right? Zhang Luo smiled.

He could tell that Ketugea wasn't out of boredom to capture heretic creatures into his realm. Its real purpose should be to find out from it a heretical creature that is powerful enough to accomplish something. So......

"Yes." The "big fireball" above the square had no intention of concealing it at all, and immediately said its true intentions:

"I need your help to free me from this bondage." (To be continued.) )