"Let's look for anything unusual along the stone platform at the entrance first." Ji Wenlin gave an order, and everyone behind him scattered against the stone platform next to the door wall to look for it.

And Bai Que, as Xia Yanru's personal guard, even though he knew that his skills might not be as good as others, he still stood behind him loyally and presented the posture of a protector.

"It smells a bit like alum oil." Yifeng has also been by Ji Wenlin's side and has not left, just because he was in charge of torture before, and he has seen countless kinds of poisons and drugs, and many things can be judged by just smelling the smell.

And this alum oil is actually dilute sulfuric acid, and the smell is not very strong in small amounts, but like so many in front of you, the smell is naturally not difficult to ignore.

"No wonder it's so powerful, it's not easy to get so much alum oil!" Yu Feng couldn't help but be amazed when he heard this, but he didn't doubt Yifeng's judgment.

"This thing doesn't smell very pungent, it doesn't seem to be at all the same as I know." Tu Hongxing also said curiously.

"When exposed to heat or water, the smell will be strong, and it will be poisonous." Yifeng explained, but what he didn't say was that what he was looking at might not be pure alum oil, who knows what else was mixed with it, just what he just saw, it was definitely more corrosive than alum oil.

"Then can't we light the torches?" As soon as Yu Feng heard that toxic gases would be produced when exposed to heat, he immediately became a little worried.

"I don't know, but it shouldn't be a big problem not to let the fire come closer." Yifeng is not very sure of the return.

"It's okay, let's see first." Ji Wenlin on the side answered, the light source in their hands is limited, and the torch is still reused, if the light source of the torch is lost, it is a little inconvenient to rely only on the flashlight.

While he was talking, the next moment the team member on the right made a discovery, it turned out that one of Qi Ju's subordinates had discovered the location of the mechanism, and this excited person almost slipped and fell, thanks to the team members around him who had been vigilant, and immediately pulled a hand, so there was no regret.

Hesitating, none of these people know much about the organs, even if they have discovered something, they can only wait for Xia Yanru to go over to see if it is true.

The stone platform next to the door wall was not wide, and only when everyone fell back and exited one after another, it was convenient for Xia Yanru to go over to investigate, but fortunately, the discovery of this team was very critical, and after careful identification, Xia Yanru simply pressed it hard.

After the mechanism was activated, the originally calm and waveless pool of green alum oil rippled instantly, and then a chain bridge was lowered from directly above the pool surface, and it was only a dozen centimeters away from the green alum oil pool below, so close to the distance, as if the churning green alum oil could splash on the iron cable at any time.

"Can you get over this?" Yu Feng couldn't help but be a little dumbfounded when he looked at it, especially the surging venom, the fate of the four-legged reptile before was still vivid.

"If it can't be passed, this mechanism will be set up in a redundant way." Yifeng doesn't think that this chain bridge is just an ornament, but looking at the design, it is not easy to think that it will pass smoothly.

Many people agreed with Yifeng's words, after all, the location of the organ was not conspicuous, and if they hadn't taken a carpet search, they might not have been able to find it so quickly.

The body of the chain bridge seems to glow with a layer of cold light, but in fact, the surface of the chain bridge is rusted and mottled, and the two thick chains are no more than a meter apart.

"Lao Zhu, you take Xiao Si and Xiao Liu to open the way, Li Yi, you lead people to the queen of the palace." Yifeng quickly laid out the formation through the chain bridge, and the people he highlighted were all his henchmen, and his skills were also in the forefront of the team.

The two named immediately responded to the task, the old Zhu's real name is Zhu Qi, at a glance at the name, he knew that this was because he was seventh in the family, and he was also regarded as the old man in the family, but unfortunately his fate was not at the right time, and he was rescued by Yifeng when he was a child, and he became Yifeng's most loyal henchman.

"Si'er, you go behind me, Xiaoliu, you come up later." Zhu Qi thought about trying the load-bearing capacity of the iron cable first, so he didn't plan to get on all three of them at first, and then let others follow after making sure that the chain bridge could bear the weight of multiple people at the same time.

"Brother, be careful." Xiao Si, who was following closely behind Zhu Qi, reminded uneasily.

It wasn't until the two of them walked a third of the distance on the chain bridge that Zhu Qi turned around and told Xiao Liu to follow, and then everyone went up at intervals, which could not only ensure that the distance between the teams was not too far, but also prevent the number of people on the chain bridge from exceeding its own load-bearing capacity.

The total length of the entire chain bridge is close to 100 meters, because there is a very dangerous green alum oil pool below, so everyone walking on the chain bridge is cautious, it is such a distance of only 100 meters, it is expected that it will take at least half an hour until everyone passes smoothly.

However, how could the truth be so smooth, the whole team has passed nearly three-fifths of the time, and I don't know where it came from, the chain bridge was originally only composed of two iron cables, no matter how strong the stability is, it will begin to shake under this strange wind.

At this time, a young man walking behind Yu Feng did not hold a torch in his hand, and his other hand was sweating because of nervousness and failed to grasp the iron cable above, and the whole person was about to fall, in order to stabilize his body, he subconsciously threw away the torch in his hand and hooked the iron cable in time, which did not become a tragedy.

But the torch that was subconsciously thrown down, as soon as it touched the green alum oil pool below, the surface of the pool ignited a flame in an instant, and then layers of white smoke dispersed, even if the white smoke had not risen to the position of the chain bridge, but the pungent smell had already come up.

"Pick up the speed and move forward." Yu Feng was also shocked when he saw this scene, and he didn't care about anything else, so he hurriedly shouted loudly towards the team in front.

Everyone on this side also saw the situation, and before they reached the other side, they were all desperate to move forward with their hands and feet, and everyone who had already arrived at the shore was also anxious about it.

Yifeng said before that this alum oil will volatilize highly toxic gas when heated, and once inhaled, it is really unpredictable.

But no matter how fast the speed of the people was, how could they compare to the poisonous gas below rising faster, but in a moment's effort, the poisonous gas enveloped the people who were still on the chain bridge, and at this time, there were still four members of the palace team on the bridge who had just walked more than half the distance.

"Hurry up, cover your mouth and nose, and hold on a little longer!" Yu Feng, who had already arrived at the shore safely, couldn't help shouting, for fear that the remaining four people would not be able to pass.

Compared with the anxiety and worry of everyone on the shore, the four people who were still struggling on the chain bridge couldn't help but sink their hearts, no matter how they protected, they could only cover their mouths and noses with one free hand to prevent inhaling poisonous gas, but how long could this be stopped?

Obviously there was only a few tens of meters away, but the four of them seemed to have no end in sight, Li Yi, who was walking at the back, sank his whole heart to the bottom, and at the same time felt a burst of dizziness, and everything in front of him was ghosted, as if he was drunk.