Three figures wearing gas masks appeared in front of the ruined hall of the Jialianshan Laboratory, which was the entrance to the laboratory, and two arched corridors connected to the hall leading to different areas.

The collapsed gravel almost blocked the intersection, requiring patience to clean up before it could be passed, and carrying the gravel itself was a very physically demanding task, not to mention that many of the stones were crawling with vines and were basically difficult to move.

Along the way, Ling Wenxuan cooperated with Mu Yunxi to cast a fire spell to burn the vines that stood in the way, and Liu Yuhan held the mana gas meter to measure the components contained in the surrounding air at any time.

"By the way, there is something that almost made me forget, where did you and that Wai woman named Youna meet?" Mu Yunxi swung a fireball with his sword and burned a vine above, and didn't look at Ling Wenxuan squarely, "The Wai people on Glaze Island should have all died in the poison gas incident five years ago, it stands to reason that there can be no survivors, I'm afraid that during the period before we met, you weren't just repairing the spaceship." ”

"I'll answer that question later, but it's more important to get down to business for now. Ling Wenxuan shot a pillar of fire, igniting a larger vine.

"You shouldn't be deliberately hiding something from me, right?" Mu Yunxi looked at Ling Wenxuan suspiciously.

"I want to hide that you still need to say hello to you beforehand? Ling Wenxuan laughed twice and walked in front of Mu Yunxi.

Ling Wenxuan's attitude made Mu Yunxi's mood extremely unhappy, but for the sake of Ling Wenxuan's "business", he had to keep up with this person's footsteps.

But Ling Wenxuan, who was walking in the front, suddenly stopped.

"Hey, what's going on?"

"See for yourself!" Ling Wenxuan squatted down to inspect the sliding door with a large hole in front of him, he pointed to the edge of the hole covered with rust, "Pay attention here, the damaged place is a bulge outward, not an inner depression, indicating that the explosion occurred in the laboratory, and the impact from the explosion completely destroyed the sliding door, forming the appearance we see now." ”

Mu Yunxi sighed: "Through observation, I found that the structure of this laboratory is very strong, and it stands to reason that it should not be so badly damaged after an explosion!"

Ling Wenxuan touched his chin, stood up and said, "There is only one explanation for this phenomenon, and that is that before the explosion, the defense system of the entire laboratory had already failed. ”

At this moment when the two were talking, Liu Yuhan had already walked in front of the two with a gas detector, and suddenly, the gas detector came out with a "ticking" sound.

Liu Yuhan shouted for the two of them to step forward: "Come here, there is a reaction on the instrument, and the air in front of you seems to contain some unknown poisonous gas." ”

Mu Yunxi, who was staring at the data on the gas detector, said with a happy face: "Can you calculate the toxicity of this gas? Maybe it is the 'murderer' we are looking for that caused the death of the people of Quanhua Island." ”

"Unfortunately, the concentration of this gas in the air is too low to confirm whether it is the poison gas we are looking for. Liu Yuhan looked at a large room in front of him, "The data shows that the proportion of this gas in the air in front of you seems to be higher, and you can measure what kind of gas it is when you go there, just in case of danger......

"Don't worry, we're all wearing gas masks, aren't we?" Mu Yunxi interrupted Liu Yuhan's words and took the lead in walking forward.

The trio came to a large room with the letter "B" engraved on it, and at this point the concentration of the unknown gas on the gas detector reached its peak.

The laboratory bench in the center of the room was overgrown with weeds, and from a distance it seemed to be a huge flower bed, with broken chemical reagent bottles all over the floor, of course, the plants did not want to let go of such a narrow space, for them the bones of those monsters became their nourishment, and the rusted iron cage was an excellent place to hide from herbivores.

It took the three of them a long time to tell that this was a research room, not a botanical garden.

Mu Yunxi found a lot of skeleton fossils of demonic beasts on the ground, and judging from his previous experience, there were dozens of demonic beasts such as sword and tiger demonic beasts, eagle demonic beasts, and wild bear and lion demonic beasts living here.

"Brother Wenxuan, what do you think?" Seeing that Ling Wenxuan beside him didn't say a word, Mu Yunxi turned his head and asked.

"Again, it's almost your mantra, can't you say it another way?" Ling Wenxuan seemed to have three vertical lines on his head.

"You mean!"

"My inference is that someone is using these beasts for some kind of experiment. Ling Wenxuan gently broke off the rust crumbs on the iron cage rod and held them in the palm of his hand, "These iron cages are obviously used to hold all kinds of demonic beasts, that person has worked so hard to catch so many demonic beasts from all over the world, but they are placed in this laboratory, isn't the purpose obvious?"

Mu Yunxi shook his head helplessly and sneered: "I thought you would put forward some constructive suggestions, but I didn't expect to say some truths that even fools can see." ”

"The measurement results on the instrument are out!" Ling Wenxuan was about to refute, but Liu Yuhan next to him looked at the gas detector in his hand and shouted.

"What kind of gas is it?" Mu Yunxi asked as he approached Liu Yuhan and stared at the pointer on the instrument.

"This gas is a gray smoke poisonous gas, which makes up about 30% of the air in this laboratory, very similar to the poisonous gas that covered the entire Glaze Island five years ago, but it is ......"

"But what?" Seeing Liu Yuhan's disappointed expression, Mu Yunxi couldn't help but feel a little anxious.

Liu Yuhan sighed helplessly and said: "It can be determined that this gas is not the poisonous gas of mass destruction we are looking for, the data shows that its toxicity is too low, even if the concentration of this gas is increased by ten times, it will not be able to poison a mouse, let alone a human." ”

"Damn, I finally got a clue, but the clue was just broken. Mu Yunxi slapped his thigh, showing regret.

"Don't be discouraged, let's search elsewhere. Ling Wenxuan patted Mu Yunxi's shoulder with his right hand, and took off his gas mask with his left hand.

"What are you doing here?"

"Didn't Yuhan say that this gas can't even poison rats, so why should I be afraid of it. Ling Wenxuan tucked his gas mask under his armpit, "This bulky thing makes me more uncomfortable than the air here, and the feeling of dizziness is too disgusting." ”

"Hey, aren't you afraid of any danger in case something happens?" Mu Yunxi just wanted to dissuade him, but Liu Yuhan beside him also took off his gas mask and shook his black hair, "Okay, whatever you want, don't blame me if something happens." ”

Mu Yunxi saw that his insistence was meaningless, so he had no choice but to take off his gas mask and hold it in his hand, and then continue to follow Ling Wenxuan.

Then the three of them came to an area full of large and small storage tanks, many of which were covered in rust and even broken to the point that only half of them were exposed, and the rest were covered with vines. All storage tanks were incomplete, the blackened flames were conspicuous, and no other part of the lab had ever been seen in such a badly damaged way.

The trio noticed that some of the canisters were clearly engraved with letters to identify the liquid inside, though many of the letters were covered in blackened marks and were unrecognizable.

After surveying the area for a while, Ling Wenxuan smiled confidently: "We have finally found the right place. ”

"What do you mean by this, judging from the appearance, there is nothing special here!" Mu Yunxi was very puzzled by Ling Wenxuan's happiness.

"You two come with me, let me analyze it for you. Ling Wenxuan said and asked Mu Yunxi and Liu Yuhan to follow him to the largest collapsed storage tank in the entire area, "If I am not mistaken, this is the storage center of the laboratory, and the so-called storage center is the place where researchers use to store their scientific results. ”

"But what does this have to do with the poison gas incident five years ago?" Liu Yuhan asked, touching his chin and thinking about it.

"Don't worry, let's take a look at this largest storage tank, what have you found?" Ling Wenxuan asked, pointing to the large storage tank behind him.

One end of the collapsed storage jar lay on the left side of the trio's line of sight, only a small part of the other end was connected to the base of the jar, and the other part was nowhere to be found, a large hole in the perimeter of the storage jar, and the edges were all broken floor tiles, and the walls were full of charred marks radiating outward.

Mu Yunxi suddenly realized: "Could it be that this is the center of the explosion that caused the laboratory." ”

Ling Wenxuan gave Mu Yunxi a thumbs up: "That's right, the damage to the entire storage center is beyond imagination, if it weren't for the huge shock wave generated by the explosion, this situation would not have been caused, and the plants here are much rarer than in other places, except for vines, and even weeds can't be seen, maybe the radioactive materials leaked from the explosion of the storage center have inhibited the growth of some plants." ”

"Come and see, there seems to be letters engraved on this jar. Liu Yuhan suddenly pointed to the base of the storage tank excitedly.

Following the direction pointed by Liu Yuhan, Ling Wenxuan and Mu Yunxi struggled to distinguish the letters covered by scorched marks.

"HSD? Mu Yunxi asked Ling Wenxuan uncertainly, "Do you know the meaning of this letter?"

Ling Wenxuan shook his head helplessly and said, "This letter should refer to the liquid in this storage tank, but unfortunately even I can't figure out its specific meaning." ”

"Hey, it seems that just a few of us want to unravel the mystery of the poison gas on Glaze Island five years ago. Mu Yunxi spread his hands, "Go back, at least I can tell my superiors that we have done our best, as for Brother Wenxuan, how should you deal with it?"

"I don't have to worry about you, at least I figured out the location of the explosion in the Jialian Mountain laboratory, and the cause of the explosion. Ling Wenxuan and Mu Yunxi looked at each other and smiled, "Someone has placed a * here, detonating the entire laboratory, this person is obviously from the outside, and then just uncover what 'HSD' means." ”

"Oh, yes, good luck then!" Mu Yunxi saluted Ling Wenxuan and asked Liu Yuhan to leave with him.

Father Ben has always been lucky, but what about you......

Ling Wenxuan pondered for a while, and then followed the two people in front of him.