Ji Tang

Chapter 447 Homework
"Good good!"

Ji Song clapped his hands, he seemed very happy at this time!
"Yes, that's it. Ask a few more questions why. This is the attitude towards learning the course of quwu. If you see something you don't understand, then go explore it. When you understand the reason, that's when you get started. when."

"Please sir, please clarify!"

Many students bowed and saluted.

They actually saw how to turn water into ice, but they couldn't figure out the reason.

Yes, saltpeter turns water into ice, but what exactly does this mean?
Ji Song nodded with a smile, asked them to stand up, and said with a smile: "Being a teacher is to teach people and solve doubts, but this time I won't tell you the truth."

Everyone was puzzled and looked at Ji Song doubtfully.

"How about this!"

He thought for a moment and said, "This is the first lesson I'm giving you, so I'll leave this question to you as homework!"

"After one month, whoever can solve the problem of why saltpeter turns water into ice will be awarded ten points."

"So, everyone, please work hard! Haha!"

After saying that, he walked away with his hands behind his back, leaving only many students who felt like cats' claws in their hearts.

"Li Tai is determined to be number one this time!" Li Tai said arrogantly.

Li Ke didn't speak. He also thought first, but he was not very good at words, but he was cruel in his heart. He must not lose this time.

The burly young man just now was thoughtful. He didn't care about winning or losing, but the reward of ten points allowed him to take a gamble.

Thinking of his elderly mother, she actually bought all the land in the house so that he could enter the academy. Only then could she make up for the travel expenses. At this time, she could only make ends meet by sewing for a wealthy family.

Thinking of this made his heart twist, but these ten points gave him an opportunity to change the situation at home.

You must know that points can be converted into money. One point is ten copper coins, and ten points is one hundred copper coins.

As long as he has this money, he can bring his mother here and no longer have to suffer at home.

Ji Song is gone, but the turmoil in this class has just begun.

Tai Chi Hall, Government Affairs Hall.

Li Shimin, Fang Xuanling, Wei Zheng, Du Ruhui, Changsun Wuji and others gathered around a large basin within a small basin to observe things.

But after waiting for a while, except that the water became a little cold, it did not turn into ice.

Li Shimin looked at Chen Shou in confusion. Does that mean you are teasing me again?

Chen Shou was about to cry but had no tears. He also told His Majesty after getting the news. He didn't even try!

Fang Xuanling said thoughtfully: "Since saltpeter is working and the water has become colder, it means the method is correct. Is the amount of saltpeter a little too little or too much water?"

After Fang Xuanling's reminder, everyone finally woke up.

Yes, the water has turned cold, which means Chen Shou is right. There must be something wrong somewhere else.

"Come here, add some saltpeter!" Li Shimin waved his hand.

Saltpeter is a kind of medicinal material. It was already stored in the palace, and soon someone brought the saltpeter.

But what makes Chen Shou afraid to do it is that he doesn't know how much to add!
It’s fine if you add too little, but what if you add too much?
Du Ruhui said: "You add it slowly, and stop for a while after each addition."

"Oh!"

Chen Shou carefully added a little saltpeter in the bag and poured it into the water. Everyone looked at it and found that there were no other changes except that the water became colder.

"Keep adding!"

"Hey!" Chen Shou added more. This time there was a change, but it was not enough, so he added more.

"stop!"

At this time, Changsun Wuji stopped him and pointed at the water to show everyone.

"This"

Maybe the amount was enough, which caused changes. I saw a lot of white gas coming out of the water. Fang Xuanling tried it and it was very cold.

Soon, under the gaze of everyone, there was more and more white air in the water, and the water also changed.

It started from the basin, then to the edge, and slowly spread towards the middle. In less than a while, the basin of water turned into a basin of ice.

"What exactly is going on?"

Li Shimin said in shock.

It was also the first time that he saw the change of water into ice so intuitively, but the reason behind it made him confused.

When a person discovers something he or she cannot understand, there are two general reactions.

If you are a Buddhist, if you can't figure it out, you won't think about it.

But the situation is different for more serious people, or people with obsessive-compulsive disorder, who will not be able to sleep.

"The only thing that is certain now is that saltpeter is working, but why?" Fang Xuanling also fell into deep thought.

But Wei Zheng was different. He was more pragmatic. When he saw such a simple method of making ice, the first thing he thought of was that from now on, people would be blessed in summer.

In winter, there is the popular earthen kang, and in summer, there is this method of making ice. God bless the Tang Dynasty!

Since learning that Li Jiancheng was not dead, others have undergone some changes, which is reflected in the fact that they no longer specifically find fault with Li Shimin in the court.

Although he still gave advice, he sometimes learned to turn a blind eye to some trivial matters, and became more tolerant of the emperor.

"Your Majesty, why should you be anxious? If you want to know the principle, just call the good prince to come." Wei Zheng said.

But what surprised him was that the emperor shook his head and said: "It's not necessary anymore. Since he left this problem to the students to solve, we better not get involved."

"Look, if anyone can solve this problem, his mind and wisdom must not be underestimated. This is selecting talents for the imperial court, and I don't want to interrupt this process."

Li Shimin saw his ability in teaching students, so he handed over his sons to him.

The prince has become more and more competent in the past few years, and the court is full of praise. As long as he continues to maintain his position, it is foreseeable that the next generation of successful kings will be successful.

Among the other sons, Li Tai is smart, especially in learning.

Li Ke is a steady person and most like himself, but...
Shake your head and don't think about it. Some things are not that simple.

With Ji Song taking care of them, he felt relieved.

"Your Majesty Shengming!"

After hearing the emperor's words, everyone bowed in admiration!
Li Shimin laughed loudly and asked everyone to stand up. What a scene of a king and his ministers enjoying each other!
"Your Majesty, this method of making ice is simple and practical. Please make it known to the public, so that it can benefit the people and provide them with a way to cool down during the scorching heat." Wei Zheng bowed and requested.

Li Shimin stepped forward to help Wei Zheng up and said with a smile: "Even if you don't say it, I will do it. If it is in the hands of a few people, it will only become a means for them to make profits. It is better to invent the world."

Hearing this, Fang Xuanling's heart moved and said: "Your Majesty, the key to this method of making ice lies in saltpeter. Controlling the source of saltpeter can prevent people from making profits from it. Secondly, it can also increase the court's income. Your Majesty, please take a closer look! "

"Okay, okay, it is indeed a plan for the country. We will wait for a while to issue the decree. The key is to control the source of saltpeter now!" Li Shimin said happily.

(End of this chapter)