The road back was very smooth, and soon everyone arrived at the ground of the ancient building.

Everyone was exhausted and panting. The fat man carried the old woman on his back, Wuxie carried the young man on his back, and Chen Hao was carrying several backpacks of equipment.

When I looked towards the entrance of the cave, I found that the way they came was blocked by a thick copper door, and I could not go back to the road.

The fat man scolded: "Damn it! When did the copper door start? It's so silly. We'll block our retreat while we don't pay attention."

Wu Xie looked at Chen Hao and asked, "What should we do? Our retreat has been blocked, how can we go back?"

Chen Hao looked at a cave directly in front of the ancient building and said, "The guy is not on the same route as us. We can get out of the route they come in."

The fat man said, "My brother is still unconscious, where can we ask?"

Chen Hao pointed to the messy footprints on the ground with his fingers and said, "These footprints must have been passed by the young man and the others. We can search along the footprints all the way."

When the fat guys heard this, they quickly went to identify the messy footprints on the ground, and compared them with the young man's shoe prints, and found that they were really the shoe prints of their group.

So everyone followed the shoe prints all the way and found that the shoe prints actually came from a huge pillar.

"Is it the guy the pillar man who came out of the pillar?" Wu Xie touched his chin and asked in confusion.

The fat men and the other men came forward and carefully looked at the carved patterns on the pillar.

The column is more than one meter in diameter, and is carved with reliefs of Pixiu, mixed with patterns such as Qilin, Qiongqi, etc., which looks very ancient and vicissitudes.

The fat man touched the butt of the Pixiu on the two pillars with his hand and said, "The temperatures of these two pillars are different! And the materials of the two pillars are also different. This one seems to have some metal wrapped in it, and the other one is all wood, but the workmanship of the two pillars is the same as that of the painter."

"So there is a mechanism in this pillar?" Wu Xie asked.

The fat man said, "Then hell, the footprints of the guy and his team came out from here, which means there is a secret passage inside the pillar! I guess this passage is the regular passage to enter and exit the ancient building, so we are taking the shortcut.

You guys wait, let me press the butts of these Qilins to see if I can find the mechanism to open the channel."

As he said that, the fat man put down the old woman's body and touched the butts of the Qilins when he started. Chen Hao grabbed his arm and said, "Don't move around. There are many strange things in these pillars. If you don't press them in the correct direction, it is very likely that the hidden weapon of the mechanism will be triggered!"

The fat man was so scared that he shivered by his words that he quickly shrank his hand back.

Although Chen Hao did not touch the pillars, he knew that there were many traps of mechanisms hidden in the pillars, so he walked forward, stretched out his fingers and gently slid on several pillars to detect the mechanisms inside.

Wu Xie and Fatty hurriedly hid aside, fearing that they would fall into the hidden weapon inside the pillar.

After Chen Hao touched it with his fingers, he found that the two pillars were indeed wrapped in metal as Fatty said. One of them was thick and heavy to the touch, but it was hollow inside, and there was obviously another space inside.

The other pillar is solid and is made of wood, but judging from the feel and the sound of the knocking, there is also a mechanism hidden inside.

He carefully touched the scales of the Qilin and Pixiu, and found that the button of the mechanism was on these scales, using the sixteen Yin and Yang hexagrams simplified from the "Kun hexagram".

Chen Hao is proficient in the sixty-four hexagrams of Feng Shui. These sixteen hexagrams are simply pediatrics for him, but for ordinary people, it is difficult to solve them.

Soon, after some deduction, he found the mechanism to understand this hexagram, that is, the scales on the auspicious beasts, and then pressed them one by one.

When the last scale was pressed down, the two pillars suddenly began to rotate, making a series of clicking mechanisms, and the entire ground began to tremble.

"Damn, it's so awesome! The old Zhang family thought that no one could solve the mechanism they designed. When they met the official Faqiu Tianguan, it was like playing a big knife in front of Guan Gong and causing humiliation to himself!" The fat man gave a thumbs up and exclaimed.

While speaking, the two pillars suddenly stopped and opened a gap from the metal pillar that could accommodate a person's entry and exit, and it was pitch black inside.

Chen Hao hurried to the gap, looked in, and found that there was a spacious underground palace under the pillar, with many iron nails nailed around the pillar for people to climb, which could lead to the upper or lower.

Wu Xie asked, "What is below?"

"The underworld palace on the first floor of the ancient building, all the ancestors of the Zhang family are buried below." Chen Hao said.

According to the construction time of the ancient building and the burial layout, the higher the floor, the closer it is to the present, and the lowest floor is the cemetery of the ancestors of the Zhang family.

"Underground Palace? How could the first floor of the ancient building be an underground palace?" asked the fat man.

"I guess the cemetery designed by the Zhang family at the beginning was only one underground palace, but later the family became larger and more crowded, so another ancient building was built on this underground palace." Wu Xie said.

"Damn, if you say that, aren't the ones hiding under the Zhang family? With their skills, if the corpse changes, they are all the kings of Zongzi?" The fat man said.

Chen Hao said: "We have no way out, come with me!"

Their origin has been sealed by the copper gate, and the road has many mechanisms. After so long, I don’t know if it has been closed or the mechanism inside has begun to operate. It is very dangerous to take that road.

The most important thing is that Chen Hao knew that only by following the path that the young man and the others had walked could he find Pan Zi and save him, otherwise Pan Zi would die here.

The fat man and Wu Xie had no good idea, but now they were both very tired, so they wanted to rest on the spot and then go down.

The fat man took out the cigarette and sent it around, and everyone chatted while smoking.

But at this moment!

Chen Hao turned around quickly and found that a large amount of yellow smoke was sprayed around the pillar at some point, silently, almost floating to them.

"The poisonous smoke is coming, leave!" Chen Hao hurriedly reminded.

"Damn it, this trick is so damn silly. Fortunately, the strong man discovered it in time!" The fat man cursed.

Everyone quickly packed up their equipment, and the wounded were on their backs, and they crawled into the gap in the pillar, and soon climbed to the underground palace below.
Chapter completed!