"Who is this person?"

At this moment, even Li Shimin's interest was aroused, and his eyes flashed eagerly and asked Du Ruhui.

"Hehe......"

Du Ruhui stroked his beard gently.

"Coincidentally, this person is also in Taiye Pool, this person is an old friend of mine, although the official position is not high, but in terms of arithmetic, it is really impossible to find a few outstanding people in this world!"

"This man is ...... Wang Xiaotong! ”

"Wang Xiaotong?"

Li Shimin was slightly stunned, as if he couldn't remember who this person was.

It is no wonder that when Li Shimin first ascended the throne, a large number of officials from the first to the eighth rank were replaced, and it was normal for a petty official who specialized in arithmetic to not remember his name.

"That's the man."

Du Ruhui patiently explained.

"This person is a doctor of arithmetic, specializing in calendars, and there is absolutely no problem with arithmetic."

"Oh?"

As soon as Du Ruhui said that, Li Shimin remembered that there was indeed such a person, and hurriedly waved his hand.

"So what are you waiting for?"

"Hurry up and call him over and see this question in my hand."

"Yes!"

……

After half a pillar of incense, an old man with a white beard in his regular clothes came to the outside of the pavilion under the guidance of the little eunuch.

"Old minister...... Wang Xiaotong, I've seen Your Majesty! ”

Wang Xiaotong trembled and saluted Li Shimin.

"Hmm."

"Come on in, I have an arithmetic problem here that I need you to do."

Li Shimin beckoned to the latter without raising his head.

"You'll see if you can unravel it."

"Yes!"

Wang Xiaotong didn't dare to slack off, and after getting up from the ground, he went to the pavilion in three or two steps, stood on the side of the table and stretched his neck to look at the title on the rice paper.

"This ......"

Wang Xiaotong was stunned when he saw the title.

Then he looked at it little by little with his eyes open, and the excitement in his eyes gradually turned into doubt, and then the look of doubt turned into shock, and finally his face turned red with excitement.

"Who came up with this topic, who came up with this topic?"

Wang Xiaotong asked for the first time.

"Uh......"

Cheng bit Jinzui and answered quickly.

"Princess Changle!"

"Princess Changle?"

Wang Xiaotong was stunned, and then looked at Li Shimin, who had an indifferent expression but a little unconcealable pride in his eyes, and muttered in disbelief.

"She has such a talent, this question ......"

"This question is simply the only problem that the old man has seen in his life!"

When everyone heard this, their hearts suddenly cooled.

"How hard is it?"

Li Shimin subconsciously asked.

"I've never seen one!"

Wang Xiaotong has a different dedication to academics, and all the questions facing Li Shimin seem to be a little simple, and he answers straightforwardly.

“……”

Li Shimin was silent for a while.

"Can you figure it out?"

"Uh......"

Wang Xiaotong hesitated for a few seconds and then nodded slightly.

"Yes, yes, but it will take some time."

"Okay!"

Li Shimin nodded.

"Then I'll give you a stick of incense, and the time of the test over there happens to be a stick of incense!"

Wang Xiaotong was stunned.

He opened his mouth as if he wanted to speak, and his head was covered with sweat in a hurry.

"What's wrong?"

"Short of time?"

Li Shimin raised his eyebrows.

"No...... No. ”

Wang Xiaotong swallowed.

"The old minister must do his best to solve this problem within the time of a stick of incense."

……

The time of a stick of incense passed in a hurry, and when more than half of the time had passed, Changsun Chong finally put down the brush in his hand with a 'click' and sighed helplessly.

"Hey......"

"It's still a very difficult question."

"If I had given me more time, I would have been able to solve it, but this time it was too short to solve it."

Let's talk about it.

The eldest grandson rushed back and glanced at the people around him who were also sad and had no clue.

"I don't think you have a clue."

"It's also ......"

The eldest grandson Chong pretended to be deep.

"Princess Changle's question is really tricky, so she didn't even think about letting others pass!"

"I think this time the horses are recruited...... Hang! ”

"Most of the time you won't be able to get down in the end......"

"That's it!"

Qin Huaiyu beside him suddenly said such a sentence, which directly frightened the eldest grandson Chong, who was chattering non-stop.

The corner of the eldest grandson's eyes twitched.

"Brother Huaiyu......"

"You've solved this problem?"

"Ahh

Qin Huaiyu nodded as a matter of course.

"I have to thank my good brother Cheng Chumo, if he hadn't patiently explained, how could I have done this arithmetic problem quickly?"

"But don't say it!"

Qin Huaiyu solemnly hooked Changsun Chong's shoulder and said to the latter.

"This problem is actually not difficult, it can be solved in less than five breaths!"

"You're right!"

The eldest grandson Chong had a poop on his face.

"What did I say......"

"You forgot?"

Qin Huaiyu showed a look at the latter, I understand you.

"As long as you find an idea for this problem, it will take a while to solve it!"

“……”

Eldest Sun Chong's face became even more ugly, and he slapped himself a few times very unwillingly.

The forced ones that were pretended before are all back now.

Under the spotlight and brilliant lights, he wanted to find a corner to hide himself, but he had no choice but to ......

There are no horns, and it is inconvenient to move by yourself!

"Little fish!"

Cheng Chumo beckoned to the little maid not far away.

"It's calculated, hurry up and give it to the princess!"

"Yes......"

……

The ministers who were paying close attention to Cheng Chumo in the pavilion also noticed the movement on the other side of the square.

"What's going on?"

"Did Cheng Chumo and Qin Huaiyu hand over the papers?"

Yu Chi Lao Hei frowned and pushed Du Ruhui beside him.

"I'll look at ......"

Cheng Yanjin and Qin Qiong also came over when they heard this.

Naturally, he saw clearly the action of Cheng Chumo and the two of them calling the maid to hand over the answer, and quickly turned around and walked towards Li Shimin.

"The ......"

"Your Majesty, the old Qin family boy and I have solved this arithmetic problem."

"What?"

Li Shimin was stunned for a moment, and then glanced towards the square.

"Cheng Chumo?"

"Qin Huaiyu!"

"Did they figure it out?"

"Uh-huh......"

Cheng Yanjin nodded, and Yu Guang glanced at Wang Xiaotong, who was still calculating on the edge of the table, and asked Li Shimin hesitantly.

"Why don't I find someone to bring this kid over and ask him face to face?"

“……”

Li Shimin frowned and thought for a while.

"No need, I'll just ask Wu Qun to ask for the answer."

After saying that, Li Shimin turned to the little eunuch and gave an order.

The latter immediately received the order, and ran towards the square with small steps, and it was not long before he ran back with a piece of rice paper in his hand.

"Your Majesty!"

The little eunuch bowed.

Li Shimin took the rice paper and slowly opened it under the gaze of the ministers.

I saw that there was not only an answer in it, but also a detailed explanation handwritten by Cheng Chumo, and after reading it quickly, Li Shimin, who had studied it for three days, frowned.

"Hiss......"

"I see!"