Datang Fenghua Road

Li Shimin just laughed and waved the boy to flatten him.

However, the eldest grandson seemed to love Wu Jiwu and praised: "What a good boy, Yue'er's good apprentice."

Yan Jingzhi was a little embarrassed, and her proud little head lowered her head.

Li Shimin suddenly said: "Okay, don't delay any longer, the envoys are all waiting to see you solve the problem, and the people also want to watch the fun, if I delay the time, I am afraid that I will be secretly scolded. Guanyin maid, You take the pearl to our disciple and let him demonstrate how to thread the pearl."

The eldest grandson chuckled, holding the pearl and stuffing it into the boy's hands.

There was another maid next to him holding a tray with extremely fine and soft silk on it. Obviously, the emperor had heard the wind at the door in the palace, so he prepared the props for threading the pearl in advance.

Yan Jingzhi coughed lightly and said in a low voice, "You still need two water basins and two water buckets, one for cold water, one for hot water, a few kilograms of saltpeter, and a stack of absorbent paper to prepare these things. After that, the disciple and grandson can demonstrate the threading of the pearl."

Li Shimin's eyes were slightly stunned, and he obviously didn't understand why he used so many irrelevant things for threading, but the emperor immediately waved his big hand and ordered in a deep voice: "Quickly prepare..."

Several eunuchs turned their heads and ran away in a panic, and in a short while they gathered these things from the Ministry of Internal Affairs.

At this time, it was already the beginning of the night, and the entire gate of the palace was crowded with people who had heard the news. Because the emperor did not order to expel people, the countless spies of the hundred knights had to make up and hide in the crowd to be vigilant.

Yan Jingzhi held the Pearl in one hand, and first asked someone to bring the cold water bucket, and said crisply: "The threading of the Pearl first involves fluid mechanics. I put the Pearl in the water and fill the holes in the Pearl with water..."

Speaking of which, he really sank the beads into the bucket, and carefully filled the nine curves in the pearl with cold water.

"Then what?" Li Shimin was obviously not a patient person.

Yan Jingzhi smiled and blocked a tiny hole in the Pearl with the fingers of both hands. She turned her head and said to the palace guard, "I'm sorry, brother, to throw the saltpeter into the cold water bucket. Thank you."

The guard hurriedly bowed and said, "I don't dare to call it hard work, you are Your Highness." Then he took a few catties of saltpeter and threw it into the water.

After this thing was thrown into the bucket, there was a strong chemical reaction in a short time, but seeing the white gas rising continuously, the bucket showed faint signs of freezing.

The envoys present were amazed, and many people thought they had seen a miracle.

Yan Jingzhi abruptly took the silk thread from the palace maid's tray, carefully pasted it on the hole of the pearl, and then gently placed the pearl on the frozen ice ball, all movements seemed cautious.

Everyone looked at it at a loss. Li Shimin frowned and thought while watching the cold water freeze. He couldn't help but say, "Baby, tell me the reason..."

Yan Jingzhi lightly wiped his forehead and said respectfully, "Saltpeter enters water, absorbs heat and freezes. This is the science of transforming heat and cold. In this world, only research institutes teach this way. The disciples filled the pearls with water, and then poured the silk into the water. Close to the hole of the pearl, the water flow inside the bead will freeze when it is cold, and then the silk thread at the mouth of the hole will be frozen."

Then he gently lifted the silk thread and even lifted the pearl. He pointed to the pearl and explained to the emperor, "Look, Your Majesty, the silk has already stuck to the mouth of the hole..."

"So what, I didn't wear it!" Li Shimin didn't know whether he really didn't understand or cooperated deliberately. In short, every sentence was on the point.

Yan Jingzhi carried the pearl to the side of the hot water bucket, slowly put the lower half of the pearl into the hot water, and continued: "Use the hot water to warm the lower part of the pearl, the ice in the lower part will melt first, and the ice in the upper part will melt. It is the subsequent melting. During the melting process, the frozen water can flow with the melting water. This is the hydrodynamics of ice water, and only the research institute will teach it in the world..."

As he spoke, he looked at the pearl carefully, and suddenly he quickly took out the pearl and held it up for everyone to see: "Your Majesty, look, this pearl has two holes. The ice has melted, but it's just starting to melt above."

Everyone nodded, Li Shimin and Changsun looked at each other.

Yan Jingzhi continued to explain: "The icing in the bead channel has been able to move slowly, so the lower hole is constantly flowing out of water, but the upper hole has not melted, and the icing at this hole has frozen the silk thread."

Speaking of which, some smart people have vaguely guessed the answer.

Lu Dongzan's eyes flickered a few times, and suddenly said: "I understand the truth, the ice cubes that freeze the silk thread will flow with the water flow, and will pull the silk thread to slowly pass through the pearl. Will pull the silk thread will pass through the nine twists and turns of the pearl."

Yan Jingzhi nodded and smiled, proudly saying: "This is the gravitation of all things, and it must be ensured that the flow of water is always downward."

The house next to him, He Yaxiu, frowned slightly and said, "Although this method is bizarre, the reason is the same as the threading ants thought by this girl. They use other things to guide the silk thread to pass through, and then pass through the nine twists of the pearl... "

Yan Jingzhi glanced at her and hummed, "That's nice, why don't you find an ant that can drill this bead? My teacher had long expected that someone would come up with this solution, so he found a hole as thin as a hair. The pearl of silk. If you want to solve the problem of the teacher, there is no one in the world."

Jiahe Yaxiu sighed softly, his eyes kept flashing, and he suddenly asked, "Young Master Jingzhi just said several subjects, can all these subjects be studied in the academy?"

Yan Jingzhi raised his head proudly and said loudly, "The all-encompassing learning, the principles of the extreme world, and the three thousand world knowledge can all be asked at the academy..."

Jia and Yaxiu nodded, and suddenly turned around and knelt down to Li Shimin, weeping and said: "Your Majesty the Emperor of Tang Dynasty, Dongying is a small country on the sea. The people's livelihood in the country is difficult and suffers from all kinds of hardships. However, the people of Dongying admire Datang, There were envoys here during the Eastern Han Dynasty, and now Dongying is sending people again. The little girl led three thousand envoys to the Tang Dynasty. We floated across the ocean without fear, and we didn’t feel bitter when we traveled across the ocean. The grace is great, so that students from Dongying can worship in the research institute, if this is done, it will be remembered for thousands of years."

Li Shimin pondered for a while, his eyes a little greedy and fell on Jia and Yaxiu's curvaceous body.Jiahe Yaxiu smiled sweetly, but this time, her actions and expressions were pitiful.

The emperor was about to nod his head in agreement, when suddenly Yan Jingzhi pretended to be exaggerating and shouted. At the same time, there were cheers from all around, only to hear Lu Dongzan laughing: "Through the thread, the pearl thread has passed through."

Li Shimin was a little annoyed, but it was inconvenient to attack here. The emperor turned his eyes to Yan Jingzhi, and saw that this kid was holding a pearl with silk threads in his hand.

Lu Dong praised the crowd, and solemnly bowed his hands and said: "His Majesty the Emperor of Tang, now the threading of the Pearl has passed, and the first topic has been completed, because the younger brother Yan was invited by all the envoys at the same time, I wonder if His Majesty can count it. Make everyone pass the test?"

These words expressed the hearts of many envoys, and all the people present looked at the emperor eagerly.

Li Shimin waved his robe sleeves heavily, nodded and said, "Since we have invited people together, it is assumed that you have all passed."

The crowd was overjoyed.

Lu Dongzan's eyes were bright, and he suddenly raised his hands to ask questions again, and said solemnly: "Emperor of the Tang Dynasty, once said four questions, since the first question has been completed, I wonder if I can continue with the second question?"

……

Chapter 644 Who is the best?

Li Shimin took a deep look at Lu Dongzan, nodded slowly and said, "The words of the Son of Heaven are never childish. Now that you have solved the first question, you can ask for the second question."

Lu Dongzan hurriedly straightened his clothes, bowed his hands solemnly and said, "Dare to ask, please give me..."

He followed the etiquette and wanted to get the second question at the gate of the palace, but Li Shimin suddenly turned around and left, followed by the eldest grandson and other concubines who also turned around.

Lu Dongzan was stunned for a while, and the envoys present were also stunned, and everyone hurriedly asked: "Your Majesty, Emperor Tang, what's your question?"

Li Shimin's leisurely voice came from the night, and he said calmly: "I once said that each of the four questions lasts six days, and today is the fifth day, and the next question must be asked tomorrow."

Lu Dongzan was a little anxious and couldn't help saying: "Is it necessary to wait for tomorrow, why don't your majesty give it as soon as possible?"

It's a pity that Li Shimin's voice did not come again, but the gate of the palace closed with a bang.The envoys present looked at each other in dismay, and everyone had a look of unwillingness on their faces.

Lu Dongzan gritted his teeth secretly, and there was an obvious urge to breathe fire in his eyes.

At this time, Yan Jingzhi suddenly came over and said with a smile: "Master Tubo, don't forget the one hundred gold you promised, and you envoys, everyone owes me a debt..."

When Lu Dongzan was angry, he couldn't help but sneered, and roared: "If you don't have a hundred gold, I won't give you a penny."

Yan Jingzhi let out a huff, and said with contempt on her face: "It is said that Tibetans are greedy, and I just realized that I have to add a word of lack of integrity when I saw it today. My son just helped you answer a difficult problem, and you dare to turn your face when it is done, very good ,really good."

Lu Dongzan's eyes flashed, and he said coldly: "The entire Tang Dynasty and the civil and military are hard on me. What can you do with me as a little boy?"

"not so good!"

Yan Jingzhi looked up at the night sky and said with a grin, "I just want to tell you that this young master is the fourth direct disciple of the family teacher. We have to hold a banquet for the envoys of a hundred countries tomorrow, and only through the banquet can we start the second topic..."

These words had deep meaning, and Lu Dongzan knew it as soon as he heard it, but when he saw the hero suddenly change his color, he bowed and apologized: "I take back what I just said, and tonight I will send someone a hundred gold to Yan's house. "

The envoys present did not know why he suddenly repeated, and they all frowned and pondered.