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The black-robed elder smiled and didn't speak, the hand of this demon domain dared to reach the cracked land, which showed its ambition.

Shangguan Ling's side was still in the process of cultivating and advancing, and Mu Yunhan was waiting and guarding inch by inch.

"Mentor, what's going on?" Shangguan Ronghua and a few people also came to Fenghuo.

"I can't explain this, but I've already told the dean that there are elders." Fenghuo said helplessly、This thing really stumped them。

"Alas, this demon domain really has to be guarded against every day, these strange things are disgusting." Zisang Rou'er sighed, and was also very helpless, as far as the dean is concerned, what are the deans who don't know about it, what can these students find?

"Don't worry, if there is any news for you, now, I have been waiting for Ling'er and Akan to come out." Wind and Fire explained.

"Yes, Wind Mentor." Shangguan Ronghua and Lu Wushuang said in unison.

The others nodded in understanding.

It took Shangguan Ling three days to complete the advanced and increase in strength, which surprised everyone.

"Ling'er, you have succeeded, and your strength is very strong." Mu Yunhan looked at Shangguan Ling, who withdrew his hands, and said with a smile.

"That is, the three days of Shibei should be impressive." Shangguan Ling returned with a smile, very happy, this advancement, as far as she is concerned, she is very satisfied.

"Let's go, there seems to be something going on outside, and in the next few days, the dean will come to take a look." Mu Yunhan said directly.

"Huh? What's wrong? Shangguan Ling asked directly.

"I don't know about this, you go wash first, pack up, and then we go out." Mu Yunhan said directly.

"Okay," Shangguan Ling said and went to take a bath.

"Dean, the eldest lady has successfully advanced, and now she is preparing, and she will come over later." The next person will report it.

"Okay," "You go and inform the elders and the wind and fire them, and I'll be waiting for you in the main hall." The dean said directly.

"Yes," said the servant, and turned to leave.

"It's finally out." The dean said with a smile, and after speaking, he also stood up and hurried in the direction of the main hall, and his clearly visible footsteps sped up.

"Dean,"

"Elder, quick, sit." After the dean arrived, the black-robed elder was the second to arrive.

Subsequently, the wind and fire and other heats also came one after another.

"Dean, Elder." Everyone salutes together.

"Well, everyone sit down, Ling'er and Akan will be here soon." The dean said with a smile.

Everyone is looking forward to the two of them.

Shangguan Ling packed up and followed Mu Yunhan directly to find everyone.

"Master, dean, I've been waiting for a long time." Shangguan Ling arrived at the main hall, saluted slightly, and said directly.

"No, you guys sit down," "Since you're here, let's get down to business," "Two days ago, I went to look for Wind and Fire, and all those demonic beasts disappeared, leaving behind a black liquid, which was corrosive. The dean said directly, with a serious face.

"What? Corrosive? Sulphuric acid? "Shangguan Ling is starting to doubt life, what about this sulfuric acid and the Yuntian Continent?

"What? Sulphuric acid? Do you know this thing? Mu Yunhan asked.

"I don't know if it's sulfuric acid, but I do know that sulfuric acid is corrosive stuff." Shangguan Ling thought for a moment and explained.

"Dean, where are those things? Are they still there? Mu Yunhan asked directly, wanting Shangguan Ling to take a look at it himself.

"Yes, I just want to leave it for Ling'er to see, but it's been a long time, and it's a little different from the beginning." Fenghuo said directly.

"It's okay, I guess I can see it." Shangguan Ling thought about it, it should be about the same.

"Okay, now in the dungeon, I've kept the way I was." Wind and fire opened their mouths and opened hugely.

"Yes, very progressive, knowing that the scene of the crime is preserved." Shangguan Ling said praisefully.

"That's, I've been studying with you for so long, and I haven't made any progress at all." Fenghuo said triumphantly.

"Haha, good, the son can be taught, worthy of Hot Wheels." Shangguan Ling gave a thumbs up to Fenghuo and said with a smile.

"Let's go." Mu Yunhan saw that the two were chatting happily, and couldn't help but interrupt directly.

"Okay, let's go." Shangguan Ling followed Mu Yunhan and stood up as he spoke.

Everyone followed suit.

"Master, have you made any new moves in the Demon Domain these days?" Shangguan Ling asked as he walked.

"No, I'll send someone to find something for them to do, I guess I'm busy now, and I don't have time to find anything for us anymore." The black-robed elder said directly.

"Haha, I know that the master won't let people be idle." "Dean, didn't you send someone to make trouble?" Shangguan Ling asked with a smile.

"With your master here, how can these things be my turn." The dean said directly in surprise.

"Master, do you hear that?" Shangguan Ling asked with a grin.

"I hear you, old fellow." The black-robed elder shook his head and said with a helpless smile.

The group walked for a long time before they reached the dungeon.

"Miss, Pavilion Master,"

"Well, let's go in first." Shangguan Ling said directly to the guards.

"Yes," the guard led the way.

"Miss, this is it." The guard said respectfully.

"Okay, you go get busy first." Shangguan Ling directly asked people to leave first.

"Yes, Miss." The guard bowed slightly and said directly.

"Wind and fire, do you mean here?" Shangguan Ling stepped forward, then saw the depression in the ground, squatted down and asked.

After Fenghuo heard it, he also walked to Shangguan Ling's side and squatted down, "That's right, this is it." Fenghuo glanced at the ground and said directly.

"This shouldn't be sulfuric acid," Shangguan Ling said directly after seeing it, this is very different from sulfuric acid, and the color of this liquid is too different from the color of sulfuric acid.

"If this isn't the sulfuric acid you said, isn't that similar to the recipe for sulfuric acid?" Mu Yunhan felt that they were all corrosive things, and they should not be much different.

"There is also this possibility, the formation of things are different, like you said, the principle of possibility is the same." Shangguan Ling nodded and said directly.

"Do you have a solution to this thing?" Fenghuo asked directly.

"This, I really don't know," Shangguan Ling is not sure now, in modern times, alkaline substances are the nemesis of sulfuric acid, but this thing is not yet certain, so, there are great limitations.

"It's okay, there's still time, you can take your time." Mu Yunhan said directly, he believes that Shangguan Ling will have a way, and secondly, the person who understands this thing here is Shangguan Ling.

"Uh-huh, I'll try." Shangguan Ling nodded, she also needs to try it, otherwise, this thing is very harmful, especially for them.

"Ling'er, is this thing so terrifying?" The dean asked disappreciatively.

"Wind and fire, you broke this barrier." Shangguan Ling looked around and said directly.

Fenghuo was a little puzzled, but he did it anyway.

Afterwards, everyone saw Shangguan Ling condense his spiritual power and directly suck a mouse, Shangguan Ling saw that the mouse was still alive and jumped, and directly threw the mouse on those solutions.

In about ten minutes, the rat began to scream, accompanied by the sound of the rat's screaming and squeaking, and then you could see that the mouse's feet were disappearing, but there was no trace of blood.

"Oh my God." The dean didn't dare to underestimate this thing anymore.

"Everyone must be careful of this thing, there is no way to crack it, if you see it again, then hide first, I will study this thing carefully," Shangguan Ling said directly, so it seems that it is really similar to the properties of sulfuric acid.

"Well, we get it." Lu Wushuang nodded and said directly, this thing must be taken seriously.

The black-robed elder was also shocked to see it, isn't this thing just as simple as killing people?

Mu Yunhan's hands were also clenched, and it felt incredible.

"By the way, dean, have you told grandpa grandpa about this?" Shangguan Ling asked.

"Not yet, because there is no result, so I didn't bother Elder Shangguan." The dean said directly.

"Okay, now I can say it, so that everyone is prepared." Shangguan Ling said directly, she also has to hurry up.

"Let's go back first, I'll go back to my room and study." Shangguan Ling then continued.

"Okay." Everyone nodded and left.

Shangguan Ling used his spiritual power to put the solution into the porcelain bottle and was behind everyone with Mu Yunhan.

"We'll go back first, you be careful with this thing." Shangguan Ronghua said directly.

"Don't worry," Shangguan Ling nodded and said with a smile.

"Then we'll go back to our room." Shangguan Ronghua spoke again.

"Uh-huh," Shangguan Ling nodded,

Then the dean, the black-robed elder, and Fenghuo left together.

"Akan, let's go back too." Shangguan Ling said directly.

"Let's go," Mu Yunhan directly took Shangguan Ling's right hand and walked forward.

"The Demon Domain is quite powerful, and it can have such a thing." Shangguan Ling returned to the room, touched his chin, and said directly.

"The others are not good, that is, these crooked things are good at it." Mu Yunhan said with a sneer.

"This is also a sample thing、It seems、I really can't underestimate this opponent.、Interesting.。 Shangguan Ling squinted his eyes and had a new idea.

"Heh," Mu Yunhan smiled and expressed helplessness, how could he have thought that his little woman would be interested in the Demon Domain.

"I know you don't look down on the Demon Domain, and I used to be too, but when I saw this thing, I felt that the Demon Domain was an opponent." Shangguan Ling explained with a smile, "Do you know that sulfuric acid is a modern, synthetic thing, and the Dao procedure is complicated and difficult, and they actually have the ability to do this." Shangguan Ling said directly.

"This thing is indeed a little scary," Mu Yunhan listened to it, and then remembered the whole mouse that was tortured to death in the end.

"If it is used on people, the consequences can be imagined, so the Demon Domain is really powerful." Shangguan Ling pursed his lips and said directly.

"Yes, yes, what you said is right," "I will accompany you to study and do your work." Mu Yunhan said dotingly, and the corners of his mouth rose.