The tunnel was about three meters wide and five meters high, leading deep into the mountain's belly, with no end in sight. Oil bowls were placed on the niches, their bean-sized flames burning quietly.

Xiahou Aotian stood at the entrance, sniffed, and said,

"The oxygen content is high, the stench is faint, and the oil lamps are still burning, which means the air circulation system inside the mountain is working properly. There shouldn't be any poisonous gas or anything. We can enter."

He looked back at his teammates:

"Who among you will go in as cannon fodder? I'm a Scholar, responsible for strategizing."

Xiao Yuan suddenly said, "Since this is a city of mechanisms, there must be traps in the tunnel. We need a scout to do on-site reconnaissance."

Everyone looked at Guan Ya, the only scout present.

Guan Ya said coldly, "You can just say you want me to lead the way."

Xiao Yuan nodded slightly, "Then I'll have to trouble you."

Guan Ya said dryly, "Heh~"

While the two were talking, Xiahou Aotian silently sent the piston-type earphones to Sun Miaomiao and others.

[Xiahou Aotian: Will these two women mess things up? I often see such idiotic characters in movies and TV shows, fighting for love and then causing trouble at crucial moments. This is an S-level dungeon, no idiotic supporting characters can mess around, especially two of them.]

[Zhao Chenghuang: They can become Saints, they can't be brainless. Don't worry about it. But The Way of the Extraordinary shouldn't have brought a woman with unclear relationship, it's unwise.]

[Sun Miaomiao: The Way of the Extraordinary, he is very clever when he is clever, and very stupid when he is stupid, especially in dealing with emotional problems.]

[Tianxia Guihuo: Probably doesn't have much love experience, ha, even if a college student is smart, he has only eaten ten years of meals, it is impossible to do everything perfectly, far worse than the old foxes.]

[Xiahou Aotian: Although not very old, he has a lot of romantic thoughts, The Way of the Extraordinary looks like a playboy, but some girls are willing to jump into the fire, really brain-dead.]

[Sun Miaomiao: You've gone too far. I don't like The Way of the Extraordinary at all. Don't be sarcastic.]

[Zhao Chenghuang: Miaomiao, wait, he wasn't talking about you.]

Zhang Yuanqing dragged his tired body over, staring at their ears, "What are you whispering about behind my back?"

"Nothing!" Everyone took off their earphones and put them in their pockets tacitly.

At this time, Guan Ya, holding a Han Dynasty bronze sword, strode into the tunnel first.

Afraid that something might happen to her, Zhang Yuanqing hurriedly followed.

Xiao Yuan, why is she so angry today, as if she ate gunpowder? He whispered to Guan Ya, "Wife, don't be angry with her."

Guan Ya said indifferently, "I'm not a Cancer, I won't be love-brained, don't worry, I won't argue with her, as for you, we'll settle the score after leaving the dungeon." With a cold face, she walked among the piles of corpses, occasionally kicking one and pushing aside the other. After carefully examining the walls for a few minutes, Guan Ya looked at the team members who followed in and said, "These dead people at the entrance are all face up, they were killed while running away. Judging from the smooth cuts on the bones and the sword marks on the wall, the enemy is a swordsman, more than one."

"These people all died at the entrance of the tunnel, which means the stone door will close as soon as you enter the city of mechanisms. This passage is a one-way passage, either pass or die."

Everyone frowned, their moods inevitably heavy.

Xiahou Aotian said, "Don't be scared by the S-level dungeon. Before coming, I read the papers in the Dead Family's database. The strength of this dungeon has an upper limit. We have level four and level five, but only The Way of the Extraordinary is level six. Theoretically, the danger in the city of mechanisms is at most Dominator level, and definitely level one or two. The Way of the Extraordinary can handle most of the levels before encountering it."

Hearing this, everyone felt a little relieved.

Sun Miaomiao said softly, "That's not right! I just looked at everyone's faces. Except for The Way of the Extraordinary, everyone else has signs of bloodshed. The Way of the Extraordinary is also shrouded in dark clouds, accompanied by bloodshed. This means we may die at any time, and The Way of the Extraordinary may be seriously injured or die."

Qian Yuliang clenched his fists and whispered a sentence in Japanese, as if to cheer himself up.

Princess Yinyao raised her small horn, "Don't be careless. The Way of the Extraordinary is only a Night Wanderer after all, with limited abilities. He can withstand many dangers, but may not be able to save us."

Zhang Yuanqing led the team forward, everyone keeping a ten-meter distance from him.

After walking through the dark tunnel for more than ten minutes, Zhang Yuanqing suddenly stopped. Two swordsmen wearing straw cloaks and bamboo hats stood in front of them.

They stood like statues facing everyone, heads lowered, the brims of their hats blocking their faces.

"Yinyao, go try them." Zhang Yuanqing said.

Princess Yinyao immediately stepped forward and took the Han Dynasty ancient sword from Guan Ya, saying, "Lend me the sword."

She slowly walked towards the two swordsmen, a "zi" sound of electric current coming from her waist bag. Immediately, a clear and beautiful singing voice echoed: "Enduring frost and drinking snow, a sword sharpened for ten years, see me stand alone, daring to call ten thousand men unable to pass!"

Yinyao slapped the cat king speaker, which immediately became quiet.

At this time, the two swordsmen under the bamboo hats suddenly raised their heads, under the hats were two black iron masks and a pair of red shining eyes.

"Enchanting Eyes," Princess Yinyao said, raising her hand to press her brow. With a "clang" sound, she drew her sword, and several bursts of sword energy cut through the air, making a shrill whistling sound.

Princess Yinyao raised her bronze sword unhurriedly, creating a flurry of sword flowers, clanging and sparks flying.

She swept her sword horizontally, deflecting the attack of one swordsman, and ducked, silently gliding to the front of another swordsman, pressing her palms on the swordsman's chest, and suddenly exerting force. With a "whoosh" sound, the two swordsmen flew out.

"Come back!" Zhang Yuanqing looked at his teammates, all at level 4 peak, "Who will go?"

The rewards are calculated based on each person's contribution. Even if it is S-level, you will not have high experience points if you do not contribute along the way.

As soon as he finished speaking, a fireball shot out at the same time, exploding with a bang. Red Rooster and Tianxia Guihuo took the lead.

Then came the sound of gunfire, Sun Miaomiao and Zhao Chenghuang provided remote shooting support. The passage was narrow and could not accommodate multiple people in close combat.

Seeing this, Guan Ya calmly took out her gun and fired. The five worked together and quickly solved a swordsman.

Xiahou Aotian hurriedly stepped forward, removed the annoying straw cloak and bamboo hat, revealing a badly damaged body. The swordsman's body was assembled from cast iron and wood.

"This is a puppet." Xiahou Aotian pried open the slightly recessed iron plate in front of the puppet's chest, and smacked his lips, "Wonderful, wonderful, the manufacturing process of this puppet is a bit old, but it can maintain operation for thousands of years. The wisdom of the ancients is really amazing, The Way of the Extraordinary, take them away, I will take them back for a good study."

In addition to the ancient craftsmanship, the materials on the puppet are also very valuable.

Zhang Yuanqing then took out Little Red Riding Hood and took away the puppet swordsman, reminding him, "Maintaining it for thousands of years is likely due to the magic given by the Spirit Realm, not how awesome the puppet's craftsmanship is. Also, is this thing useful to you? You are just a Foshi, not an alchemist."

Xiahou Aotian raised his handsome face and said disdainfully, "You don't understand, mechanical arts are a branch of alchemy. You don't need to reach the Dominator stage to learn it. The mechanical arts that have been passed down since ancient times are divided into two major schools, Mo and Luban. Luban's mechanical arts later integrated the curse magic of spiritists and the spiritual talismans and yang fire of Night Wanderers, and were called Yansheng Arts by later generations. The Mo mechanical arts slowly disappeared in history. After the ancient practitioners were extinct, the Yansheng Arts were also lost. A few years ago, the official and Scholar families jointly created a fund to promote ancient arts, but it ended without success."

Sun Miaomiao asked with great interest, "Why?"

"Time is one aspect. Any technology relies on accumulation. Mechanical arts have long been lost. Without a teacher to teach, it takes more than ten years to get started by studying on your own. The history of Spirit Realm walkers is only a mere century, and the Spirit Realm families have only been established on a scale for nearly fifty years." Xiahou Aotian sighed, "On the other hand, mechanical arts are a branch of alchemy. For a Dominator, with this material and time, isn't it better for me to directly refine props? So mechanical arts have not been carried forward to this day. A small number of people in the three major Scholar families who are obsessed with this path are still researching it, and they have indeed created many good things, but they are too niche."

Tianxia Guihuo thought for a while and said, "There may be mechanical art secret books here. When the time comes, the secret books will belong to you, and you will provide the gang with mechanical weapons."

"As long as you give money, anything is fine." Xiahou Aotian's wallet is always tight.

The group continued to move forward, and encountered "poison arrow" attacks, stone ball attacks, poisonous smoke attacks, and Wraith attacks, safely overcoming many difficulties.

Finally, they walked out of the long tunnel and came to a huge stone cave. At the entrance of the stone cave stood a stone tablet, with the four characters "Ming Gui" and "Jie Yong" written in red.

The entire stone cave was about sixty square meters, with only one passage, one was the entrance, and the other was the exit opposite the group.

The ground of the stone cave was a huge Bagua diagram, and at the exit stood a three-meter-high statue of a blue-faced, fanged ghost.

The straight-line distance of a passage is only sixty meters, which is very short for everyone to pass.

But the ground engraved with the Bagua is covered with corpses and broken bones, indicating that there are hidden killers everywhere in the stone cave.

"What does Ming Gui and Jie Yong mean?" Red Rooster asked.

"Jie Yong means thrift, right? I don't know about Ming Gui." Sun Miaomiao looked like she wasn't very well-educated.

Only Xiahou Aotian, as the most knowledgeable person present, explained, "Ming Gui and Jie Yong are the ideas of the Mo family. Jie Yong is to oppose extravagance and waste, save expenses, and improve productivity. As for Ming Gui, there is more controversy. The most accepted saying is to believe in ghosts and gods. Ghosts and gods are clearly divided between good and evil, so you must have the world in your heart, fear the world, and not do bad things."

Tianxia Guihuo silently listened and examined the situation inside the stone cave, saying, "More people died here than outside, it's very dangerous. Same old rules, use Yin corpses to explore the way."

Zhao Chenghuang immediately took out the bronze box and used spirit servants to control the terracotta warriors and enter the passage of the stone cave. As soon as they stepped into the center of the Bagua diagram, the Yin-Yang fish slowly rotated, and the blue-faced, fanged ghost at the exit came out, turning its head and staring at the terracotta warriors with a森森gaze.

Dong! Dong!

When the terracotta warriors took the third step, the Yin-Yang fish happened to finish rotating. The next second, the blue-faced, fanged ghost shot two beams of white light from its pupils.

Peng!

The terracotta warriors instantly exploded into pieces, scattered all over the ground.

The broken stones trembled slightly and quickly gathered together, reforming into terracotta warriors.

Zhang Yuanqing suddenly said, "Take a step forward!"

Zhao Chenghuang's spirit servant reconnected with the terracotta warriors and manipulated them to enter the Bagua diagram. It took a step, and the Yin-Yang fish in the center rotated again. When it finished rotating, the blue-faced, fanged ghost shot two beams of white light from its fierce pupils, and the terracotta warriors exploded again.

After reuniting again, Zhang Yuanqing said, "Retreat." The terracotta warriors retreated, and this time they were not attacked.

At this time, Zhang Yuanqing looked at his scout girlfriend. Guan Ya had already understood the pattern and said, "As long as something enters the stone cave, it will trigger the attack of the ghost statue. You must pass through the stone cave before the Yin-Yang fish completes a full circle and reach the exit."

Red Rooster immediately said, "This is easy, I can just go through with a Fire element technique."

"It's not that simple." Guan Ya looked at the broken bones inside the stone cave. The Mo sect is a family of immortals, and the Golden Race dares to come here. They must have gathered a large number of ancient practitioners. Among these people, aren't there any Fire Masters? Teleportation is definitely not going to work.

"The Way of the Extraordinary, try with your spirit servant."

Zhang Yuanqing exhaled lightly. A spirit servant with the image of a plump young man with his belly ripped open roared out and swept towards the exit at an extremely fast speed.

The Taiji fish in the center of the Bagua diagram instantly completed a full circle, and the ghost statue shot a beam of dark light from its eyes, shining on the spirit servant.

The spirit servant let out a sharp, silent scream, disappeared into a cloud of black smoke, and quickly dissipated.

Zhang Yuanqing frowned.

Guan Ya nodded, "White light is aimed at real objects, black light is aimed at spiritual objects. The faster the speed, the faster the Yin-Yang fish rotates, teleportation won't work either."

She suddenly took out a large-caliber pistol and pulled the trigger at the ghost statue. As soon as the bullet left the barrel, the Taiji fish completed a full circle at a speed invisible to the naked eye. Immediately afterwards, the white light flashed, and the bullet head exploded into dust.

"As long as it passes through the stone cave, no matter what it is, it will suffer a devastating attack." Guan Ya shook her head.

"The attack intensity can directly kill level five. My terracotta warriors have good defense, even level four Saints can't easily break them." Zhao Chenghuang said in a deep voice.

Red Rooster widened his eyes, "What should we do?"

"Not necessarily," Tianxia Guihuo turned around and said, "Look at the distribution of the skeletons, several of them approached the exit, which means they withstood several attacks from the ghosts and were almost successful, right? How did they succeed?"

Sun Miaomiao's heart moved, "Human wave tactics."

Tianxia Guihuo nodded, "That's right, use Yin corpses and terracotta warriors as cannon fodder, and we'll rush over."

He thought for a while and said, "Zhao Chenghuang's terracotta warriors have 'self-healing' ability, don't use Yin corpses first."

After speaking, he looked at Zhao Chenghuang.

The latter understood and the spirit servant's fingers extended out strips of black lines, probing into the bronze box.

One black terracotta warrior after another drilled out, a total of twelve.

These terracotta warriors were all transformed from the terracotta warriors in the underground palace.

Although Zhao Chenghuang didn't have that many Yin corpses, the terracotta warriors were stronger than ordinary level 4 Yin corpses.

"Dong dong dong..."

The twelve terracotta warriors rushed into the stone cave in an orderly pace.

The Taiji fish rotated crazily, and the eyeballs of the ghost statue shot out beams of light, as fast as lasers.

Tianxia Guihuo pinched a fireball and smashed it out with all his strength.

Sun Miaomiao then cast Star Teleportation.

Firelight surged from Tianxia Guihuo's body, and starlight enveloped Sun Miaomiao.

The firelight went out, the starlight dissipated, and the two remained in place without moving. And before the starlight and firelight enveloped them, the terracotta warriors in the stone cave had already been destroyed by the "laser."

"Unable to use skills..." Tianxia Guihuo's face changed slightly. He seemed to have remembered something and suddenly looked at the stone tablet, "Disabled... You can't use skills in the stone cave."

"Twelve Yin corpses lasted less than two seconds." Zhao Chenghuang's tone was unprecedentedly dignified.

The team fell into silence for a while.

However, something even worse happened. Red Rooster pointed at the tunnel behind them and shouted, "There's poisonous fog!"

Everyone looked back and saw a large cloud of yellow-green thick smoke, like fog, pouring in.

For a time, the team was under attack from both sides.