This scoundrel is a bit of a swordsman.

Those who know their stuff will definitely make a purchase themselves; they certainly won't let go of the opportunity to make a name for themselves in history.

Years later, when someone recalls these theorems and mentions their names, what a glorious honor that would be!

Therefore, Xiao Xingchen was not in a hurry at all, as plenty of people would testify and confirm his case.

“Very well, I come from the Blue City Academy in the Eastern Region. I have just arrived in Yong'an and have witnessed such an interesting event. I am willing to offer my opinion on behalf of you, young friend.”

A scholar stepped forward and bowed to Xiao Xingchen.

"What right does a down-on-his-luck scholar have to testify?"

Faced with the doubts, the scholar slowly spoke.

"I am Lan Beitang from the Blue City Study in the Eastern Region. I wonder if I am qualified?"

"Hiss, is that Scholar Sword, one of the Four Heroes of the Eastern Region?"

"You flatter me, you flatter me. May I ask if I am qualified to perform a calculation for him?"

The scholar carried a book basket on his back, dressed very casually, wearing a scholar's hat and a plain robe. He blended into the crowd and would go unnoticed; he was the kind of person who couldn't be more ordinary. Yet, his name sounded quite famous.

"Lan Beitang, the scholar-swordsman, is certainly qualified,"

The eldest princess was also taken aback, not expecting to find such a person among the crowd today.

"Chen Miaoyuan of the Hanhai Chen family, together with Scholar Jian, will verify the calculation to prove its authenticity."

Chen Miao, dressed in a green dress, walked through the crowd and walked up, giving Xiao Xingchen a strange look as she did so.

"The Chen family of Hanhai? I've heard that the newly appointed Vice Minister of Revenue, Chen Haoran, has a daughter who is exceptionally intelligent and is considered the most outstanding daughter of the Chen family. This must be her."

"Since everyone is so interested, I, Ye Yunfeng, would also like to join in the fun. I am Ye Yunfeng from the Ye family of Yong'an City. Greetings, everyone."

Another young master stepped forward, and his self-introduction of his family name caused another stir. Whether it was the Scholar Sword or the Chen family of Hanhai, although they were well-known, they were far removed from the common people of Yong'an City.

The Ye family of Yong'an—there's only one Ye family in Yong'an City, and that's the Prime Minister's family. Ye Yunfeng is the only son of the Prime Minister's family. His stepping forward carries a completely different meaning compared to the previous two, making it hard not to speculate whether this represents the Prime Minister's family's stance.

"Since that show-off Ye Yunfeng is here, how can I, Lin Yuze, be left out? I'm here too."

Xiao Xingchen's eyes flashed. He might not recognize the others, but he knew Lin Yuze far too well. This was Xiao Jianren's纨绔 (playboy) brother, a scion of the Lin family, a military family. With his level of knowledge, let alone calculation, he probably couldn't even read many characters. He had come here solely to confront Ye Yunfeng.

At this point, the four young talents had emerged from the crowd and arrived at the city gate. Together with Confucius, the five of them were sufficient to verify Xiao Xingchen's words.

This was the first time the Crown Prince felt that things were out of control. He could no longer stand on the city wall and look down at either Ye Yunfeng or Lin Yuze.

"Let's go, brothers, come with me down there and meet them in person."

The Crown Prince sighed and said to those behind him, "These people all have powerful backers. As the Crown Prince, it would be unwise to offend any of them rashly."

He could stand here looking down at the Eldest Princess because they were enemies, but as for the Ye and Lin families, these two powerful clans controlled both military and political affairs, he would have to be mindful of their opinions in the future.

"Thank you all for standing up for justice. You are all outstanding young people, and I'm sure you can complete this on your own without my reminder. I await your results. Once our results are consistent, it means I answered correctly, and for the Princess, that would naturally be a victory."

Xiao Xingchen clasped his hands in a fist salute to the group. Regardless of their backgrounds, the more powerful these people were, the more solid their position would be today, which could be considered a tacit help to him.

"I thank you all in advance. Once we enter the city, the Princess's residence will express our gratitude to each and every one of you."

Huangfu Lingxue also expressed her opinion at this moment, saying that all of these people were worth winning over. Unexpectedly, things had taken a turn for the better, and she had turned misfortune into a blessing.

"Sure, no need to wait, let's begin,"

The scholar put down the book basket, took out his brush and ink, and said with a smile,

"Everyone, I'll start by making a fool of myself. Please make yourselves at home."

"Then let's not waste any more time. I can't wait to solve this unsolvable problem. Someone, bring me pen and ink." Ye Yunfeng waved his hand, and immediately a servant ran up with a table, pen, and ink.

"Alright, let's see who solves it first."

Qingyu had prepared everything and brought it up for Chen Miao. Only Lin Yuze looked at this and that with a bit of annoyance, finally fixing his gaze on Xiao Xingchen.

"Hey buddy, can I borrow a pen?"

"Young Master Lin, this way please. I have some here." Before Xiao Xingchen could respond, Ling Feng had already taken over the conversation.

Xiao Xingchen sighed helplessly. This Lin Yuze, true to his association with Xiao Jianren, was just like a hopeless student who forgot his pen for the exam—truly exasperating.

The scene fell silent as everyone focused intently on the young men below the city walls. Confucius quietly stepped aside and began his calculations.

Don't worry about the poetic meaning of the words Xiao Xingchen recited; just focus on the numbers. Each sentence in the formula points to a step in solving the problem.

However, fearing that people of this era wouldn't understand, he specifically explained it to them.

The saying "Three people walking together, seventy is rare" means that after dividing this number into three equal parts, the remainder is to be multiplied by seventy.

The phrase "five plum trees with twenty-one branches" means that the remainders obtained by dividing the tree into five equal parts should be multiplied by twenty-one.

The seven sons reunited in the middle of a month. "Middle of a month" refers to half a month's thirty days, specifically the fifteenth day. This means that the remainder after dividing by seven should be multiplied by fifteen.

Dividing by 105 reveals that this means adding the three numbers obtained by multiplying above together. If the total sum is greater than 105, then 105 or a multiple of 105 should be subtracted.

This is what's meant by subtracting 150 from 160; the difference obtained is the smallest unknown we're looking for.

Xiao Xingchen recalled what he had learned in his past life, recounting it in detail. Many people were present, and some had already begun to take notes. They might not understand it, but the content itself instinctively felt profound.

The silence was so profound you could hear a pin drop. Everyone was deep in thought; this drama of preventing the princess from entering the city seemed to have turned into an academic exchange.

"Wonderful, wonderful indeed! Brother, you are truly a genius! So that's how it is!"

The scholar swordsman was the first to stand up, his face filled with respect; clearly, he had finished his calculations.

Ye Yunfeng and Chen Miao followed closely behind, while Confucius lagged behind a little.

The group's expressions were complex; they looked at Xiao Xingchen as if he were a vast treasure.

"Brother, may I ask your surname? My name is Ye Yunfeng. You are welcome to visit my home sometime; the Ye family's doors are always open to you."

This statement, representing the Prime Minister's residence, sets a certain tone: this young man is worth the Prime Minister's court winning over.

"Young man, why don't you come to our house? Ye Yunfeng is unreliable. He could sell you out and you'd still be counting the money for him. You can't associate with that kind of person." Lin Yuze ran up and directly confronted him.

"Lin Yuze, do you want to get beaten up again?"

"Come on, I'm not afraid of you!"

"You scoundrel..." Ye Yunfeng said helplessly. He could only accept his bad luck in encountering this thing.

"Thank you, Brother Ye. My wife and I are just passing through. We will leave after you confirm the details. I will visit you again if I have the opportunity in the future."

"Very good," Ye Yunfeng said without making any further requests, and then proceeded to discuss the problem.

"I've already calculated the result, everyone. What about you?"

"Same here, let's each write down our answers and have the teacher check them, shall we?" The scholar, Jian, had already written down a number and then folded the paper.

"Yes, that's what I meant."

Chen Miao took out the number she had written down and handed it over at the same time.

“This is mine,” Xiao Xingchen said, handing over her answer as well.

The crown prince, who was on his way, was stunned. Despite his haste, he couldn't stop their calculations. He could disregard the others, but these people… He knew things were going badly.