In Changyang Valley.

Dugu Lao and Jiu Xian argued for a few words, and then Dugu Lao turned his eyes to Luo Xingchen who was standing aside.

Lan Yiping and Shi Yiyun were standing not far away. They knew Dugu Lao's habits and it was not appropriate to come forward at this time.

"Come and see if there are any errors or omissions in the numbers calculated by the circle cutting technique." Old Dugu said.

Luo Xingchen could see from his eyes that he was extremely confident in the numbers he had calculated. At the same time, although Dugu Lao praised his genius in disguise, in fact, there was still doubt and distrust in his eyes.

When it comes to martial arts, Luo Xingchen is indeed not good enough. His martial arts came from the guidance of Jiu Xian, but in recent years he has been busy with work and studying, so he can only find time to practice martial arts and cannot concentrate on it, so his martial arts achievements are not high.

But just because you're not good at martial arts doesn't mean you're not good at other things.

What he is best at is not the Four Books and Five Classics, but the mathematics taught to him by his mother Yang Ruoqing. Now he is better than his master, even better than Yang Ruoqing.

The art of cutting circles is an old trick that he doesn't play any more.

What he is using now is an infinite series, which is completely beyond the understanding of people of this era.

"There is an error in this number." Luo Xingchen said directly. He was not hiding it, he had to show his confidence at this time.

"What's wrong? Little baby, you have to think carefully and don't talk nonsense." Dugu Lao was a little annoyed, and his beard stood up.

"Haha, I just said that your stuff was wrong. If you still don't admit it, you're a stubborn duck..." The wine wizard patted his thigh, laughed a few times, picked up the wine gourd and drank a few sips of wine.

"Say what's wrong!" Dugu Lao ignored the Jiuxian and stared at Luo Xingchen, urging.

"Circle cutting itself is no problem, but circle cutting is too old-fashioned. I have a new algorithm."

Luo Xingchen pursed his lips and continued: "This is not a temporary achievement. I can start with the basic calculations..."

Immediately, Luo Xingchen picked up the wooden stick and scratched it on the sand table, starting from the basics bit by bit.

At first, Dugu Lao still had a disapproving attitude. After a while, after seeing Luo Xingchen's meticulous and novel algorithmic ideas, he gradually began to be immersed in it, and from time to time asked questions about aspects that he did not understand.

Seeing that Dugu Lao indeed had the purest and purest attitude toward mathematics and science, Luo Xingchen was also willing to explain it in detail and discuss it in detail.

About an hour later, Dugu Lao let out a long breath.

"This mathematical theory is almost like the way of heaven. The mysteries in it are endless and cannot be exhausted by human power!"

"Little brother, you are very good. In terms of mathematics and science, you are my master! Everything I learned before was in vain."

Dugu Lao smacked his mouth and sighed. At this time, his eyes on Luo Xingchen were completely different.

"Lan Yatou, Shi Xiaoniu, you two, take your little brothers over to wash away the dust and have a good rest." Dugu Lao raised his head and ordered.

"Okay." Lan Yiping simply responded with one word, but sighed in her heart.

The old Dugu looks more and more like a child as he gets older. He calls himself a brother to a younger boy. This generational hierarchy cannot be more chaotic.

However, she was also used to it. Dugu was a bohemian and unruly person when he was young, but now he is just returning to his original nature.

"Old guy, you finally have some conscience, but you have exhausted my little apprentice." The wine master said while drinking.

"Why is he your little apprentice? Don't you want to accept apprentices?" Dugu Lao raised his eyebrows.

"His martial arts was taught by me, not my apprentice. Whose apprentice is he?" Jiuxian glared.

"You're an old fool. You talk drunkenly and talk nonsense. You want to take advantage of me. I won't argue with you."

How could Mr. Dugu fail to see the Jiuxian’s intentions?

Previously, he called Luo Xingchen little brother and treated him as a peer. But now the Jiu Xian emphasizes that Luo Xingchen is his disciple. In this way, the Jiu Xian is a generation higher than him.

He didn't bother to care about the Jiuxian's verbal advantageous behavior.

"Okay, that's it for today. I'm going to practice. See you tomorrow."

Dugu Lao stood up, turned around and walked away without any sloppiness, his big sleeves were fluttering, and there was no smell of fireworks. This shows that his Qinggong has reached the level of perfection.

"The old guy is gone, Chen'er. You go and rest with the two girls. I will test your martial arts again tomorrow."

The wine master stood up, sang folk songs in time, and soon disappeared into the distance without a trace.

…

Luo Xingchen was placed in a small courtyard.

Although this yard is not big, it is actually extremely valuable.

The furniture here is made of expensive wood, and there are even many antiques. The walls are hung with famous calligraphy and paintings, and there are even out-of-print pieces that cannot be seen outside, which Luo Xingchen can feast his eyes on.

Being able to arrange it in this courtyard means treating him as a distinguished guest.

At noon, food was delivered from outside. I didn't expect that there would be such a sumptuous lunch in this isolated valley.

Luo Xingchen fell asleep for a while after eating. It was not until mid-afternoon that he saw Shi Yiyun visiting.

Shi Yiyun changed into an aqua gauze skirt, her skin was like jade, and she was exceptionally beautiful.

Luo Xingchen did not let down his guard. The beautiful woman with a faint smile in front of him was actually a murderous female devil.

"Have you slept?" Shi Yiyun asked with a smile.

"Slept well." Luo Xingchen nodded.

"Later, you go with me to a place to meet a senior." Shi Yiyun said.

"Is it Mr. Dugu?"

"It's not Mr. Dugu, it's another senior, a senior from our Saintess lineage."

Shi Yiyun paused, then continued: "I may need your help."

"no problem."

"You don't even know what kind of help you are helping, why did you agree?" Shi Yiyun was slightly surprised.

"I believe you won't harm me. Does it have something to do with my bloodline?" Luo Xingchen's lips raised.

"That's right, let's check out the situation then and see if it will be useful." Shi Yiyun said.

"Okay, let's set off, there's no need to waste time." Luo Xingchen stood up.

Since Luo Xingchen was so cheerful, Shi Yiyun didn't need to say anything he wanted to say.

About half an hour later, Luo Xingchen entered an underground alleyway.

"Old seniors live underground?" Luo Xingchen asked doubtfully. The underground is not a good place to live.

Normal people can't stand it when it's humid and can't see the sun.

"Yes, it's right in front."

Shi Yiyun stepped forward and pushed open a stone door.

What caught Luo Xingchen's eyes was a huge ice cellar.

"Senior Liu, I'm here to see you." Shi Yiyun shouted loudly.

"Come in." A hoarse and cold voice came from inside.
Chapter completed!