Li Zhi, don't be a coward

Chapter 99
The Son of Heaven does not necessarily need to learn mathematics, but no matter how many wives he marries, he can still count them. If he can’t count, his wife will help him count. If the wives can’t count, it’s easy to kill a few.

Li Qinzai thought of many things about children's innocence and ignorance, including the journey of Empress Wu.

Don't look at the relationship between today's emperor and the empress is so good, Empress Wu also came out of the sea of ​​corpses and blood in the harem.

The smiling Li Zhi in front of him, who is harmless to humans and animals, seems unaware of the cruel harem battle back then.

The harem is like a nest, and the three thousand beauties treat him as a trophy and fight hard. The winner is the queen and the loser dies.

Apparently Empress Wu was the ultimate victor in this brutal struggle, and enjoyed her spoils alone.

Looking at Li Zhi who was laughing, Li Qinzai's thoughts drifted far away.

Qiao'er seemed to be very fond of Li Zhi, and Li Zhi squatted in front of him, showing a rare mischievous look.

"Son of Heaven is just a name, and he looks no different from ordinary people. Look at me, how many eyes and mouths do you have?"

Qiao'er didn't admit that he was born. After being with Li Qinzai, he had to say that his personality changed a lot.

At this moment, he stretched out his hand, touched Li Zhi's nose, and then happily turned his head to look at Li Qinzai.

"Father, you really look the same as us," Qiao'er quickly hid behind Li Qinzai after touching it, and said, "But he's still not as handsome and handsome as Father. Father looks more attractive than the Son of Heaven, and he even has a beard..."

Li Qinzai's eyelids twitched, and he hastily made amends: "Your Majesty, forgive me, the child's words are innocent, the dog's words are careless..."

Li Zhi waved his hand and said, "Okay, isn't it true that I am so tyrannical that I care about my children's words?"

Looking at Qiao'er with a smile in his eyes, Li Zhi sighed: "My sixth son, Li Xian, is about the same age as Qiao'er. He was born in the fifth year of Yonghui. After Chang'an, let the two boys play and study together."

Then Li Zhi smiled and said: "The "Hundred Surnames" compiled by you is very helpful to the enlightenment. Now the princes and princesses in the palace who have not yet enlightened will learn your "Hundred Surnames". In a few years, Presumably the folks also regard hundreds of surnames as the head of enlightenment, Jingchu, you have made great contributions to the Tang Dynasty."

"I don't dare to take credit for it. The hundred surnames were just made up inadvertently for the convenience of teaching Qiao'er. I feel ashamed. At that time, I didn't have the idea of ​​making meritorious service to the Tang Dynasty. I only thought about how to make Qiao'er recognize more characters."

Li Zhi laughed and said, "It doesn't matter whether you intended it or not. The important thing is that you have indeed made meritorious service. Didn't I also decree that Qiao'er be given the title of 'Captain of Qingche'? Not really Reward, just express your heart casually."

"Thank you, Your Majesty."

After chatting for a few words, Li Zhi caught a glimpse of the sand on the ground, with numbers written all over the sand.

Li Zhi snorted, and said, "What is this thing? It's twisted and twisted, it's weird, and it's used for learning?"

Li Qinzai hesitated for a moment, then said: "Let's just count on learning, I'm teaching Qiao'er mathematics."

"What is 'mathematics'?"

"The study of numbers, uh, in the Tang Dynasty, it was also called 'Mingshu Science'. I think that children's enlightenment should not only recognize words and memorize, but also learn to do calculations well."

Li Zhi was stunned: "It turned out to be Ming Suan, heh, Datang's Ming Suan was based on the "Nine Chapters of Suanjing", and the imperial court's scientific examination would also select a number of scholars from Ming Suan, but most of the children started from the age of thirteen or fourteen. I just started learning arithmetic, it's too early for Qiao'er at this age."

Li Qinzai sighed. In fact, the Tang Dynasty was quite good, but there were also many disadvantages. Although the monarchs, ministers and people were broad-minded, the ancients were not so forward-looking after all.

Apart from emphasizing literature and martial arts and farming, I really don't care about other aspects.

Li Qinzai didn't know Li Zhi very well at the moment, and he couldn't figure out the emperor's temper, so he didn't dare to remonstrate rashly. Judging from Li Zhi's attitude, he didn't seem to pay much attention to Ming Suanke, and Li Qinzai was not good at persuading him.

It is said that the emperor is moody, so what if when the chat was in full swing, Li Zhi encountered some numbness, suddenly turned his face at the banquet, and yelled, "Where is the sword and axe?"...

The first person in history to dedicate his precious life to science, Li Qinzai did not want this honor at all.

"Yes, yes, your majesty is right. But there is nothing left and right in Zhuangzi, so I can teach Qiao'er casually when I am bored." Li Qinzai said perfunctorily.

Li Zhi noticed his perfunctory attitude, frowned, then smiled, and pointed at him.

"Jingchu, I heard that you are quite famous in Chang'an City. You should be a person who is not afraid of anything. Why are you so cautious in front of me? Are you afraid that I will be moody and kill you if you disagree with me?"

Li Qinzai laughed dryly, if you weren't the emperor, I'd dare to pinch your neck right now and yell at you hoarsely, "Learn mathematics, physics and chemistry well, and you won't be afraid to travel all over the world", believe it or not?

Li Zhi's interest suddenly became low for some reason, and he sighed sadly: "It is said that the emperor is a loner, but I always think that I am just like ordinary people, who can eat, drink, and scatter, and also suffer from birth, old age, sickness and death."

"Jingchu, you have saved my life and made great contributions to the country several times. I hope that you and I can be friends who can talk about everything in addition to monarchs and ministers."

"A ruthless emperor would feel that being alone is an honor. I never feel that way."

These words were very sincere, and Li Qinzai was slightly moved.

He suddenly felt Li Zhi's loneliness, and also felt Li Zhi's need for friends.

The emotion that a man needs is not just love, some emotions cannot be given to him by Queen Wu, nor can his elders and relatives.

Just like the relationship between Li Qinzai and Xue Na, friends are relaxed and comfortable when they get along, they can completely show their backs to each other, and they can also joke and fight without any scruples or courtesy.

Li Zhi probably never had this kind of emotion in his life.

Li Qinzai really wanted to regard Li Zhi as a friend, but he was the emperor of the Tang Dynasty after all.

Li Zhicheng's mansion in the history books is not shallow, and he has done better than his father in many places, and it is definitely not the silly and sweet appearance shown.

However, although it is not necessary to treat him as a friend, it is still right to give advice as a courtier.

After hesitating for a long time, Li Qinzai suddenly said: "I would like to offer a word of advice to your majesty, please accept your advice."

"You said."

Li Qinzai thought for a moment, and said: "Your Majesty, do you ever remember that I made a paper airplane in Taiji Palace, which can fly five or six feet away?"

"Remember, I still remember Jing Chu said that this thing involves aerodynamics, aerodynamics, etc. I still don't understand what it means."

Li Qinzai drew a standard square on the ground with a stick, and said, "I will show you a new thing."

Li Zhi was refreshed, and hurriedly raised his voice: "Wang Changfu!"

The servant Wang Changfu appeared behind him quietly like a ghost: "The servant is here."

Li Qinzai was taken aback. Could this guy be a ghost soldier raised by Li Zhi?
Li Zhi said in a deep voice: "Bring a pen and paper, I and Jing Chu have played the right match, you can write it down."

Wang Changfu bowed: "Your maid obeys the order."

After fetching the pen and paper, Wang Changfu sat cross-legged in the yard, dipped the brush in ink, and hovered over the table.

Li Qinzai scratched his head: "Uh, Your Majesty, it doesn't have to be so formal..."

Li Zhi smiled and said: "What Jing Chu thought and said is of great help to me and the Tang Dynasty. You must remember it. You can say it. After the palace people write it down, I will go back and refer to it carefully."

Taking a deep look at Li Zhi, Li Qinzai suddenly realized that his position in Li Zhi's mind seemed much more important than he imagined.

"Your Majesty, what I want to advise His Majesty is about the importance of Mingshu."

"I'm all ears." Li Zhi was very humble at the moment.

So Li Qinzai collected himself and drew a straight line with a long stick on the sandy ground, and drew two arrows in the same direction under the straight line.

"For example, my Great Tang Master was fighting fiercely with the enemy army. The enemy army was defeated and fled on foot. After fleeing for half an hour, my Master Master sent cavalry to chase after him. Does Your Majesty know how long it will take for Master Master to catch up with the enemy army?"

Li Zhi frowned, looking confused.

"Give me a condition. The defeated enemy army can run twenty miles per hour, and the cavalry of my Great Tang King's Division can travel fifty miles per hour. The general who leads the army must know the exact time to catch up with the enemy..."

"Just chase after him, why do you need to know the exact time?" Li Zhi asked puzzled.

Li Qinzai sighed, and said, "What if the direction of the enemy's retreat happens to be their own city? Our generals must know whether they can catch up with the enemy before they flee into the city, right?"

"If you know in advance that you can catch up, you will naturally do your best to catch up. If you know after calculation that you will not be able to catch up, you will decisively withdraw your troops and arrange the next military operation. This is the ability that a general should have in assessing the situation."

Li Zhi's eyes lit up when he heard the words: "Can you figure it out?"

"can."

As he spoke, Li Qinzai counted on the sand with a long stick.

"The enemy marches twenty miles per hour, our pursuit is fifty miles per hour, the enemy advances for half an hour, that is, ten miles before our army starts to pursue, then the starting distance between the two armies is ten miles, the formula is the pursuit Distance minus speed difference..."

Li Qinzai easily wrote a formula on the sand, and said calmly: "So, the time it takes for our army to chase the enemy is one-third of an hour, and it takes about two quarters for our army to catch up with the enemy." , destroy it."

After finishing writing, Li Qinzai threw the long stick in his hand and smiled at Li Zhi: "If the general who leads the army knows how to calculate, he can calmly decide whether to pursue or retreat at this time..."

Li Zhi was stunned, fixedly staring at the crooked and unfamiliar Arabic numerals written all over the ground, without looking up for a long time.

"Jingchu, you are..." Li Zhi shook his head vigorously, and said in a low voice, "What happened just now? Why did you suddenly calculate the time?"

Li Qinzai said softly: "Your Majesty, this is the Department of Mingshu. Everything in the world, whether it is moving or still, can clearly define its shape and speed, and master the laws of all things."

Li Zhi looked blank, turned his head to look at Wang Changfu who was recording, and said, "Do you understand?"

Wang Changfu still kept the action on the pen and paper. He didn't understand the mathematical formula written by Li Qinzai just now, so he didn't record a single word.

(End of this chapter)