Until they walked into the underground secret passage, the Du family still looked incredulous.

"I really didn't expect it......" Duke muttered, he had been following Shi Cheng in the secret passage for more than a quarter of an hour, but the front of the secret passage was still a black hole, and there was no sign of reaching the end.

Wu Neng held a lit fire fold in his hand, and while following everyone, he looked at the structure of the entire secret passage, he turned his head and said to Shi Cheng beside him: "Old Shi, according to preliminary estimates, it has been more than five months since this secret passage was completed. ”

"It's been so long!" The Du family, Xu Fengshi, and Ma Guo were all shocked in their hearts.

"Moreover, the people who built the secret passages were very professional, not only the structure was sturdy, but also the design was heavily ventilated." Wu Neng continued, and his tone couldn't help but bring some appreciation, "There is a lot of work in this small section we have just walked, and someone must have built a lot of construction here more than five months ago." ”

"However, it has only been more than a month since the news of the existence of a strange treasure in the forbidden area came out, and most of those people who built tunnels here are also here for the treasures, could it be that they will not know the prophet?" Duke asked suspiciously, he looked at Shi Cheng for a while, and Xu Feng for a while, wanting to get a reasonable explanation from the two of them.

Shi Cheng was silent, and Xu Fengshi lowered his head, as if in contemplation, and neither of them gave an answer for a while.

"Let's go ahead first, and see if there are any key clues left by those thieves, maybe we can help us locate their whereabouts." Shi Cheng made a gesture and motioned for everyone to move on first.

The group walked for about half an hour and came to a fork in the road.

"This ...... Which side should we go now? Xu Fengshi asked.

Shi Cheng pricked up his ears and listened, and looked at the road on his right: "I want to go here to see, do you hear the sound of water, it is coming from the direction on the right hand." ”

Duke nodded and said, "Then according to what Shi Daoyou said." ”

So the group walked to the right, and it didn't take long for the originally cramped tunnel to suddenly become wider, and after dozens of steps, everyone entered a relatively spacious underground stone room.

At the same time, the sound of the water that had been there before had become more obvious at this time, the people of the Du family, you look at me, I look at you, everyone was surprised to find that the sound of water was actually the sound made when the waterfall fell!

"Could it be that this place is ......," Duke had a bold guess in his mind.

"Old Shi, look there, there seems to be a secret door over there." Wu Neng held up the fire fold in his right hand, and pointed to a wall about ten steps in front of him.

Du Yang took out an oil lamp from the package he was carrying, turned it on and twisted the knob under the oil lamp, adjusted the brightness to the maximum, and he took the lead and walked to the wall that Wu Neng had instructed.

The secret door is still very obvious, even if you are not a professional mechanism magician like Wu Neng, you can see that there is a huge iron rocker that falls to the ground on the right side of the stone gate that is about eight feet tall and four people wide, which seems to be a mechanism used to open the stone door.

"Shi Gongzi, and this Wu Gongzi, you see...... Shall we try to open the secret door? Duke asked cautiously. He added Wu Neng to this inquiry, because when everyone was advancing in the tunnel together, he saw that Wu Neng seemed to know a lot about civil engineering, and many of the designs in the secret passage were recognized by him in a short period of time, which made Duke, who was still a little disdainful of Wu Neng and thought that Wu Neng was just a little white-faced man who ate dry rice, changed his attitude.

"Old Wu, take a look, is it safe to open the mechanism like this?" Shi Cheng asked.

Wu Neng stepped forward, extinguished the fire in his hand, took the oil lamp from Du Yang's hand, and asked Du Yang for an iron long sword.

Wu Neng held the oil lamp, carefully inspected the external structure of the secret door and the activation stick, and from time to time used the iron sword to knock here and there on the ground and the wall, and after about a quarter and a half of time, he showed a knowing expression.

"It can be opened, this secret door shouldn't have any protective mechanism attached." Wu Neng turned around and nodded to everyone.

"But......" Duke hesitated, "we don't know what's hidden behind the door." ”

Wu Neng also shook his head, "As for this...... The kid can't see it, after all, there is no clairvoyant eye......"

"Let's open it first, don't worry, there is Shi here, everyone step back first and protect yourself." In the end, it was Shi Cheng who made the board.

After everyone was ready, Shi Cheng raised his right hand, his fingers volleyed out, and a faint true qi hit the joystick, pushing the joystick directly in another direction.

A heavy muffled sound sounded behind the stone door, followed by a violent rushing sound behind the door, and the two sounds mixed together like a roar from a whirlpool of the rapids.

Soon, however, the sound behind the door died down, and the heavy stone door seemed to suddenly become light, and was quickly opened by some kind of great drag.

Walking out of the stone gate, everyone was stunned by the scene in front of them, only to see that behind the door was a thick earthen wall, in the earthen wall, there was a bronze giant pillar embedded in it, and there was a gap at the bottom of the giant pillar, which allowed people to enter the inside of the pillar.

"This ...... This pillar is ......" Du Yang was so shocked that his mouth widened, he cautiously walked to the gap, looked at the situation inside with great caution, and after confirming that there was no danger, he stretched in and looked left and right. After his head retracted, Du Yang's two thick eyebrows were raised high, as if he had seen something in it that surprised him extremely much.

"What's wrong, Du Yang?" Seeing that Du Yang's face was very strange, Duke couldn't help but ask, "But what's strange in the pillar?" ”

"Back to Elder, there's a mechanism on the wall on the left side of the pillar...... Feel...... Never seen before...... It's weird to look at. ”

"I'll take a look." Wu Neng said that he was a professional mechanism magician, and he could see at a glance that there was no mechanism device set up in the bronze pillar for attack, so after scanning the pillar a few times, he swaggered in.

Everyone also followed the fish, and the space inside the pillar was very spacious, and there was still room for the group to go in.

Shi Cheng saw at a glance the mechanism that surprised Du Yang.

On the wall to the left of the inside of the bronze pillar, there is a rocker that is about the same shape as the one outside the stone gate, but only one-tenth the size of the outer one, and next to the rocker, there are three stone slabs arranged from top to bottom, the top stone slab is carved with a three written in Yamahara-style numerals, the middle one is two, and the bottom one is one. Among the three stone slabs, the edge of the stone slab engraved with a word is faintly glowing.

"Old Wu, what kind of organ is this? Can you tell. Shi Cheng turned his head to look at Wu Neng.

"Old Wu?"

Wu Neng didn't answer, he stood in place as if he had lost his soul, his eyes staring at the strange mechanism, and the strong emotions in his eyes seemed to be rushing out in the next moment.