The knowledge of Gewu, before this, the old man did not have heard of the word Gewu, and the word Gewu is in the Book of Rites.

In "The Book of Rites: University", it is recorded that knowledge is in the object, and the object is then known.

If a person wants to cultivate Qi Zhiping and Mingde in the world, "Gewu" is the foundation of merit and the beginning of "the way of the university". If the "object" is improper, the "knowledge" is unclear; If something is not qualified, it is not known.

However, few people say what the word Gewu means, and many ancient theories have their own interpretations of the word Gewu, and there is no unified statement.

Even he himself has some unclear intentions, what is a thing and what is knowledge.

And what about the result? It's all unknown.

However, in the letter sent by Zhuge Xiaoyou in front of him recently, he put forward a completely unheard explanation for Gewu.

It is the principle of studying things.

The idea is to correct human behavior in order to find out the truth of things.

After explaining the word Gewu, Zhuge Xiaoyou's letter also raised several questions, what is air pressure, what is friction, and what is heat transfer.

He had never heard of these words, and he was struck by the phenomena mentioned in the letter, which were used to support them.

First, the furnace is filled with water and boiled, and when the water is boiling, the furnace lid is moving.

No one touches it, what force makes the furnace lid move, said to be air pressure, the power of gas.

But what is the air pressure, and how can the power of the air be seen?

The two books are pagination and merger, the pages overlap each other, and the book cannot be opened as much as possible.

He tried it himself, but the pages overlapped, and the weight of the tissue paper really couldn't be pulled apart for some reason.

The force in this is called friction, and what is this force, he can't solve it.

The third is that the bottom of the cookware is burned in the fire, and then the mouth of the hand can gradually feel hot.

The fire burns at the bottom, why the upper part is also hot, it is called heat transfer, and it is another word that cannot be understood.

Some of these three questions are what we see in daily life and are accustomed to it, but no one has ever corrected their reasoning. When I think about it, I realize that I don't know the root of it.

Some of the whimsical ideas are surprising and incomprehensible.

The reason of the three things makes people unsure, but they all faintly make people feel that there is the root of the law, and if you can get it, you can get the reason of things, the way of the university.

After reading the letter, the old man spent the whole day thinking about it.

It's not about looking at the boiling teapot in a daze.

There "tear books" and observe the cookware as evidence of friction and heat transfer.

There is gain, but it is not clear, it is incomprehensible, and it is difficult to sit still.

It was day and night, and rushed to Nanyang, where I arrived and asked Zhuge Xiaoyou for a solution.

The old man put the paper in his hand on the table, which was the letter that the young man had written to him, and sighed slightly.

He came this time with a cheeky face.

After these few days of exploration, he knows the importance of this principle of things, not to mention anything else, if he can get the pressure of Qi in it, it will be a university.

Qi is everywhere, it is infinite power, if people master its way, use it skillfully, they will also master a huge force in the body.

What's more, it is only this force that is not appropriate in the object.

He could feel that it would be a road to school. is so re-educated, he is really a bit cheeky to come to the door to ask for it.

But alas, he really wanted to get a glimpse of the avenue.

The old man bowed and bowed.

"Zhuge Xiaoyou, the old man is still invited, ask for a thing or two."

Seeing the old man saluting, the young man hurriedly got up and got out of the way, after all, he couldn't afford this salute from school.

He smiled bitterly and stood up.

"Mr. Hui, you don't have to do this salute, you shouldn't accept it."

As he spoke, he gently helped the old man up, and then sat down and said.

"As for where I know about this study of things, it's a long story."

With a look of memory in his eyes, the white-robed young man sat at the table and spoke slowly.

"It must have been a few months ago, in the spring rain, and a guest came to the house at night."

"I thought it was just an ordinary guest, but who knew how much she had learned, and said that she was grateful for staying overnight and told me to learn."

"How many of them are ······"

The young man's narration was unpleasant and clear.

The floor window of the room was ajar, and the wind peeked through the window with the voice of a young man, blowing the paintings on the wall.

It wasn't until the boy finished speaking, it was almost dusk outside the house.

"So the gentleman said that he would come back when the flowers and trees in the courtyard began, and before leaving, he gave me a book to read it."

"I look at it and know the object, but I can't understand it, and the whereabouts of the gentleman are no longer known. Tossing and turning, this is the book with Mr. Hui to solve it. It's Mr. Liang Lao. ”

As he spoke, the young man in white bowed apologetically.

The old man in front of him was touching his beard, and his wrinkled face was stunned.

"It's ······ like this"

As he spoke, he let out a long sigh of disappointment, and his shoulders drooped, as if he had aged a few years again.

Said helplessly.

"Since it is a private grant, the giver has not given it, and the old man should not have seen it. Hey, it seems that the old man has no chance of getting the road after all. ”

As he spoke, he smiled a little dejectedly, picked up the tea bowl that had cooled down on the table, and drank the cold water.

The young man in white looked at the old man in front of him helplessly, he knew very well the temperament of the person in front of him, and he would never do anything that violated the teachings.

So even if he was willing to give the book to the old man to read, the old man probably wouldn't read it.

It may be said to be pedantic and stubborn, or it may be said to be a kind of insistence on respecting learning first.

After the old man drank his tea, he finally asked again.

"Zhuge Xiaoyou, the old man asks one more question, I don't know what this book of Mr. and you is called?"

"Qimen Dunjia." The white-robed young man's voice was not heavy.

But the old man was stunned, and the tea bowl in his hand fell on the table, making a soft noise, and spun on the table.

"Mr. Hui?"

The boy didn't know why the old man reacted the way he did.

The old man heard the young man next to him call him, moved his eyes, looked at the young man and made sure again.

"Zhuge Xiaoyou, what did you say the book was called?"

"Qimen Dunjia." The boy spoke again, a little puzzled in his eyes.

Qimen Dunjia ······

The old man thought about these four words, and his mouth moved, as if he was caught in some memory.

As a young man, he wandered in the countryside.

On the riverside, I saw a gray-dressed man with a hat sleeping next to a bookcase half a man high.

It was a cold winter day, and the weather was bitterly cold.

When I walked over, I saw that the man was thinly dressed, and I thought that I had exhausted my outskirts, and I should return to it.

So he took off one of his shirts and her.

The man awoke and smiled when he saw himself, and the hat covered his face and saw only the mouth of half of his face smiling.

She thanked her shirt, then took three books out of her suitcase, saying that she could pick one to read.

He felt that he had nothing to do, so he picked a book to read, and that book became the foundation of his future learning and laid the foundation for his path.

And one of the other two of the three books is called Qimen Dunjia.

When he finished reading the book, the man took it and left.

Later, he heard a rumor in the market, and heard that there was a person in the mountain named Mr. Baijia.

He didn't know the person's name, and he didn't know if she was really Mr. Baijia, but he always remembered him as a teacher and didn't dare to forget it.