It was a famous mathematical problem from the ancient times in his previous life. He didn't expect to see it here.
Xie Tianji looked at Yang Xuan indifferently, his eyes full of contempt.
Yang Xuan smiled and said directly, "Twenty-three."
The smile on Xie Tianji's face froze. He looked at Yang Xuan in disbelief, a hint of surprise in his eyes. However, this surprise was fleeting. He opened his mouth and wanted to say something, but Yang Xuan interrupted him.
"One hundred and twenty-eight."
Xie Tianji's expression froze again, and the words he wanted to say were swallowed back into his throat.
Yang Xuan didn't give him any time to breathe and continued, "Two hundred and thirty-three, three hundred and thirty-eight …"
Xie Tianji froze. After a long while, he looked at Yang Xuan in disbelief and asked, "There are still two hundred and thirty-three? There are still three hundred and thirty-eight. "
Yang Xuan smiled and said, "There are still four hundred and forty-three, there are still a lot."
Xie Tianji didn't say anything. He suddenly squatted down and quickly calculated on the ground. After a long while, he stood up and looked at Yang Xuan in shock. He asked blankly, "How did you calculate so quickly?"
Yang Xuan laughed in his heart. The problem of not knowing how to count was a classic from his previous life. How could he not know? He was just reading from the book now.
Ling Wudao saw Xie Tianji's shocked expression and knew the result in his heart. He couldn't help but smile and said, "Elder Xie, Mr. Ren is quite accomplished in mathematics. Do you believe me now?"
Xie Tianji still looked at Yang Xuan in disbelief and didn't answer Ling Wudao.
After a long while, he suddenly said, "I want this person."
After saying this, he directly grabbed Yang Xuan's arm and pulled him away.
Yang Xuan struggled slightly and looked at Xie Tianji. Then, he glanced at Meng Qingqing.
Xie Tianji was stunned and then understood what he meant. He said anxiously, "Go go go, let's go together.
While Ling Wudao shook his head and smiled bitterly, Xie Tianji had already pulled Yang Xuan and Meng QingQing away without a trace.
Only Ling Wudao was left in the hall. After pondering for a moment, he said faintly, "Bury Venerable Hao's body and compensate his family with double the standard compensation. This matter will end like this, and no one will mention it again."
Someone outside the door answered softly and turned to leave.
A faint smile slowly crept onto Wudao's face, with an inexplicable meaning.
After being pulled by Xie Tianji and passing through countless strange buildings, they entered a huge cave.
After passing through several heavily guarded doors, the scene that appeared in front of Yang Xuan shocked him.
In front of him was a huge space. The ground was made of bluestone, and countless bottles and jars were placed on a huge table. About half of them were carved out of crystal.
Yang Xuan could hardly believe his eyes.
How was this a cave? This was simply a huge laboratory.
On the table, there were test tubes and flasks that should have been carved out of crystal. All of them showed Yang Xuan a scientific aura.
At this moment, Yang Xuan was extremely shocked. He didn't expect that Xie Tianji not only studied mathematics, but also chemistry. Looking at the other tools placed on the side, he might even have some achievements in physics.
This was simply an ancient scientist!
Xie Tianji looked at Yang Xuan proudly. The expression on Yang Xuan's face was like that of a country bumpkin. It made him feel very comfortable.
"Brother Ren, although you're not as good as me in mathematics, you're still not bad. I admire you for being able to come up with the Shadow Measurement Method." Xie Tianji looked at Yang Xuan proudly. "However, I reckon you won't be able to understand the things in this cave."
He had already changed his way of addressing Yang Xuan as Brother Ren, which could be considered as acknowledging his attainments in mathematics.
Xie Tianji walked over, picked up a test tube, and sighed. "Don't talk about you. I reckon no one in this world will know what I'm doing. I'm so lonely."
As he spoke, he acted as if he was invincible and lonely. It was very arrogant.
Meng Qingqing couldn't help but look around. In this huge cave, there were more than ten Biyun Sect disciples in uniform. She didn't know what they were busy with.
Yang Xuan walked to the stone table and picked up a crystal bottle. There was a label on it with symbols that Yang Xuan didn't recognize. There was white powder in the bottle, but he didn't know what it was.
"Don't touch it. You can't afford to pay for it if it breaks." A middle-aged man walked over and looked at Yang Xuan with an unhappy expression.
Yang Xuan smiled and put down the crystal bottle without saying anything.
Chemistry?
Sorry, he just happened to specialize in chemistry.
If he took out a little bit of the chemistry knowledge in his brain, it would be light for him to beat up Xie Tianji. He reckoned that in this world, there wouldn't be anyone like him.
At this moment, he had an idea in his mind. Biyun Sect was famous for using poison. Could it be that Biyun Sect's poison came from here?
Then he shook his head and denied the idea in his mind.
Biyun Sect's poison had already entered the Dao of poison. Its effect wasn't something that could be achieved by chemicals.
Obviously, the purpose of Xie Tianji bringing him here wasn't to study chemistry, but to study mathematics.
Xie Tianji turned around and took out a piece of paper. He spread it on the empty stone table at the side and waved to Yang Xuan. "Brother Ren, come and take a look at this. What do you think?"
Yang Xuan walked over and glanced at the paper. He was a little stunned.
There was a three-dimensional figure drawn on the paper. Its shape was a bit like a flask. Below it was a round ball. On top of the round ball, there was a cylindrical object.
Seeing this, Yang Xuan's heart suddenly moved.
Measuring the length of one's body and measuring the length of one's body?
If the thing on the picture was infinitely enlarged to a size that was impossible to measure by human strength, then he could use the two methods mentioned by Xie Tianji.
Yang Xuan keenly felt that he seemed to have come into contact with some secret.
Xie Tianji looked at Yang Xuan and observed his expression.
Yang Xuan asked directly, "Elder Xie, what is this?"
Xie Tianji hesitated and didn't answer Yang Xuan directly. Instead, he asked, "If this object, hmm, this thing is incomparably huge and human strength can't measure its height, can we use the measuring method you mentioned to measure its height?"
Yang Xuan looked at him and probed, "Martial artists can fly, but can't they measure its height?"
Xie Tianji shook his head. "That place can't …" Before he finished speaking, he seemed to realize that he had spilled the beans. He looked around and said, "In short, human strength can't measure its height."
Yang Xuan's heart moved. He thought for a while and said, "If there's a constant light source that can make this object produce a shadow, then its height can be calculated."
Xie Tianji muttered, "Brother, can you explain to me how to calculate it?"
Yang Xuan looked at him speechlessly. Weren't you looking down on me just now?
However, he already realized that this Xie Tianji's position in Biyun Sect was revered and might even be above Ling Wudao. With his words, would he and Meng Qingqing be safe and sound?
Thinking of this, he didn't beat around the bush and directly cupped his hands to Xie Tianji. "Elder Xie, to be honest, both of us are now prisoners …"
Before he finished speaking, Xie Tianji waved his hand and said, "No matter what you've done, I'll ensure that both of you are safe and sound. You can rest assured."
These words were domineering, but Yang Xuan still said, "Elder Xie, you don't know, but I've already killed a Venerable in your sect …"
Xie Tianji said impatiently, "As long as you don't kill the few people with names, the others don't matter."
Domineering!
Yang Xuan secretly gave him a thumbs up.
Meng Qingqing also looked at Xie Tianji with interest.
Yang Xuan was relieved. With Xie Tianji's words, there shouldn't be anyone in Biyun Sect who would make things difficult for him.
At this moment, Ling Wudao suddenly walked in. He looked at Meng Qingqing and said, "Let's go, that Old Man Meng from your sect has brought an elder from my sect to exchange for you."
Yang Xuan was stunned. Wasn't he not going to exchange? Why did he change his mind?
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