My Wife is Unbeatable in the Whole World, Touch Me If You Dare!

The next morning, Li Nuo woke up to find the bedding by his side had already been tidied, and his wife was nowhere to be seen.

He had slept well overall, probably the most peaceful and comfortable sleep he had since his arrival here.

Firstly, the couple Brother Strong and Song Qian hadn't been making a racket next door, and secondly, his wife had been sleeping by his side. Before drifting off, he was filled with a profound sense of security.

Sitting up in bed, he stretched his body, then got out of bed to find the toiletries already laid out on the table.

After washing up, Li Nuo stepped into the courtyard but didn't see his wife; however, Housekeeper Wu was already waiting there for him.

Housekeeper Wu was nominally the chief housekeeper of Li Mansion, but his main duty was to ensure Li Nuo's safety.

Wherever Li Nuo went, he would follow, and when outside, he would never stray more than a few steps from him.

As it was getting late, he informed a Song Residence maid to relay a message to his wife, and Li Nuo then departed the Song Residence for the Chang'an County Government.

Exiting the grand gates of the Song Residence, Li Nuo brushed past an elder with graying hair.

Clutching a thick book to his chest, the elder had walked more than ten steps into the Song Residence when he stopped and looked back.

The young man seemed unfamiliar to him, someone he had never seen before, likely some relative of the Song Family.

But none of that mattered at the moment. What occupied his thoughts was something far more important.

After half a month of testing, Mr. Chen was convinced that the "Brother Li Nuo" Song Mu'er spoke of possessed a profound mastery of Mathematics.

He not only understood the Nine Numbers but could also explain them in simple terms, making even a six-year-old child comprehend the abstruse Mathematics. Mr. Chen, who had taught Mathematics his entire life, had to admit defeat.

That young man was simply a born teaching saint.

Yet, the problem Mr. Chen left for the Song sisters yesterday did not belong to any category of the "Nine Numbers", and he wondered if Li Nuo could solve it.

For most people, mastering the Nine Numbers was sufficient for Mathematics, as that was all that was examined in the Imperial Examination. But beyond them lie many problems that involve Mathematics.

Like the horse-drinking conundrum at hand.

Although it wasn't within the scope of the "Nine Numbers", it was a real problem one could encounter on the battlefield. With the speed of utmost importance, being able to move faster than the enemy forces could provide a slight advantage.

Often that slight advantage could determine the outcome of a war.

Mr. Chen had also been studying this problem recently but hadn't reached a conclusion yet.

He admitted that leaving such a problem, which even the mathematical community hadn't solved, to a six-year-old girl was indeed a bit narrow-minded, but after suffering too many blows in recent days, he genuinely wished to regain some face before his students.

"Good morning, Mr. Chen."

"Mr. Chen…"

Along the way, the servants of the Song Residence greeted him non-stop, with the old man nodding slightly in acknowledgment as he passed through several gates and long corridors to arrive at a room.

Three figures, one large and two small, were already waiting inside the room.

Every time Mr. Chen saw Song Jiaren, he felt a twinge of guilt, feeling that he hadn't taught her well in the past.

"Good morning, teacher!"

Song Mu'er and Song Ning'er stood up and greeted him respectfully.

Mr. Chen nodded, set down his book, and asked eagerly, "Did you finish the homework I left you yesterday?"

Song Ning'er shook her head, saying, "No, the homework you left was too difficult. I asked Brother Yu and my father, my uncle, and they all said they couldn't do it…"

Mr. Chen didn't say much. If even he and several Mathematical masters hadn't solved the problem, it would be shocking if anyone in the Song Family could.

From the beginning, the only person he cared about was the "Brother Li Nuo" Song Mu'er had mentioned.

As his gaze fell upon Song Mu'er, she nodded and said, "Teacher, I did finish it."

Song Ning'er, taken aback, immediately questioned her, "Didn't you say you didn't know how to do it?"

Song Mu'er glanced at her and snorted arrogantly, her chin raised proudly as she replied, "I might not know how, but my family's Brother Li Nuo does…"

"Liar!"

Song Ning'er darkened in the face, arms crossed, turning her head away.

Song Mu'er retorted with a cold huff, "How many times have you lied to Brother Li Nuo…"

Mr. Chen had no interest in watching the twin sisters quarrel and hastily asked, "How did he solve it?"

His life had been devoted to Mathematics, and encountering a problem solved by others but still unsolvable by himself made him itch with anticipation...

Song Mu'er took a Mathematical booklet from her small bag and flipped to the last page.

When Mr. Chen saw that diagram, he understood right away.

A lifetime spent studying Mathematics, often what he lacked was just a bit of inspiration or a new perspective.

On this problem, the approach was incredibly clever.

The few faint and solid lines were like dazzling beams of light that dispelled the fog shrouding his heart for days, revealing the truth beneath the mist.

Mr. Chen, holding that booklet, had a look of amazement in his eyes as if he were holding a rare treasure, and could not help but laugh, "Brilliant, simply brilliant! Such an ingenious solution, those old guys would never think of!"

Song Jiaren glanced at the excited Mr. Chen and a thought emerged in her mind.

Could it be that even Mr. Chen couldn't solve this problem?

This was somewhat unthinkable to her, as Mr. Chen was Daxia's leading authority in Mathematics—he had no interest in a civil servant career, and dedicated his life to the study of Mathematics, fostering scholars everywhere, having taught many top scholars in mathematics.

Many officials in the court were his students; it could be said that in the field of Mathematics, he was absolutely at the pinnacle.

How could there be a Mathematics problem that he couldn't solve?

As Mr. Chen noticed Song Jiaren's gaze, he realized he had lost his composure.

He coughed twice and said, "Mumu did very well with her homework this time; as a reward, here's a flower hairpin. I suddenly have an urgent matter to attend to, so we'll not study new content today. You should review the previous lessons..."

Without Mr. Chen's tedious and boring Mathematics classes, Song Mu'er and Song Ning'er were naturally overjoyed. After their teacher left, they hardly remembered to review and immediately ran out of the classroom to play.

Song Jiaren watched Mr. Chen's hurried departure, thinking that his matter must be especially urgent, for he started to run in the midst of walking. Despite his age, he could stride vigorously—when crossing the threshold, he even leapt over it...

Qingfeng Academy.

As one of the Four Great Academy of Chang'an, Qingfeng Academy held a high status in the hearts of Daxia's scholars. The academy's location was also extremely advantageous, situated in the southwest of Chang'an, covering a vast area with mountains and water inside, the environment was unparalleled in its serenity and beauty.

Originally a Royal Garden, the academy was granted this royal estate as a reward for the contributions of Qingfeng Academy to the court; a certain Emperor of Daxia specifically chose this site for a new academy.

Each of the Four Great Academy had its strengths: Yunmeng Academy specialized in military strategy and riding and shooting, being the cradle for military officers; East Mountain Academy was known for its Music, Beixi Academy excelled in both painting and calligraphy, and Qingfeng Academy stood out in Mathematics. Over seventy percent of the civil servants in the court came from these four academies.

At the moment, in a small courtyard by the lake behind Qingfeng Academy's hills,

Three grey-haired scholars in Confucian robes were gathered around a piece of drawing paper, holding wooden rulers, occasionally taking measurements upon it.

They had been studying this problem for several days now.

Although they had already measured the range of the answer with their rulers, Mathematics was a precise subject—the answer to this problem was unique and only one. To them, determining the range was far from sufficient, even though they had narrowed it down considerably.

While they were deep in thought, a figure sauntered in, hands behind his back.

The three were all so focused on their thinking that none noticed the newcomer.

Mr. Chen walked up behind them and cleared his throat loudly. Startled by the sound, they all turned around.

Looking at them, Mr. Chen had a superior gaze and spoke dismissively, "You three old fellows, each claiming to be a grandmaster of Mathematics, can't even solve such a simple problem. You're truly disappointing to me…"

Inside the small courtyard, the three turned around simultaneously. One of the pale-faced elders raised his eyebrows and asked, "Old fellow, have you solved it?"

Mr. Chen stroked his beard and answered, "Naturally, such a simple problem isn't even worth pondering over for long. You might as well admit it; in the realm of Mathematics, I am stronger than you guys..."

The three frowned slightly; Mr. Chen's tone was overly arrogant.

All four were retired Mathematics instructors from Qingfeng Academy and held grandmaster status in Daxia's Mathematics circle. Usually, none would admit another as better.

One of the pale-faced elders snorted coldly and said, "Come, show us how you solved it..."

Mr. Chen swung his robe, snatched the ruler from their hands, drew a few faint and solid lines on the paper, then casually tossed the ruler and pen onto the table.

The three elders didn't pay attention to him but instead stared intently at the drawing on the table.

"This…"

"The sum of the lengths of two sides of a triangle is greater than the third side?"

"Brilliant, by shifting that point, you've turned a three-location problem into a two-location problem!"

"Old fellow, with your rotten wooden head, to think you could come up with such an ingenious solution…"

They had dedicated their lives to the study of Mathematics. Without Mr. Chen's explanation, they grasped the subtleties of the simple lines and couldn't help but speak out.

They had been stumped for days, yet the solution to the problem was so simple.

What they were lacking was just a bit of inspiration.

But for Mathematics, that bit of inspiration was the most challenging and most important to find.

The solution to the problem seemed simple, but it completely surpassed the category of the "Nine Numbers" and even the current scope of Mathematics; it was an entirely new way of thinking.

And they, who had studied the "Nine Numbers" their entire lives, were confined to one domain of thought, struggling to conjure new ideas.

One must admit, Mr. Chen really made them take notice this time.

Of course, having competed for a lifetime, there was still some unwillingness in their hearts.

One of the elders took out a new piece of paper and handed it to Mr. Chen, saying, "Old fellow, take a look at this one. If you can solve it, I, Lu Yunting, will admit you're better than me..."

Mr. Chen took the paper, glanced at it, and then tucked it into his sleeve, saying, "I already have a solution in mind for this problem. However, I am almost late for class at the Song Residence. I'll solve your doubts tomorrow..."

Without waiting for the three to respond, he immediately turned and walked out of the courtyard.

Leaving Qingfeng Academy, he looked back to see if anyone followed. Seeing no one, he quickly turned around and dashed toward the direction of the Song Residence...