In the Ganlu Palace, Li Er lived behind a case, the expression on his face seemed to be smiling, and he looked at Zhao Chen who came in with interest.

Lao Qin sat on a futon not far from Li Er, looking at his nose and nose at his heart, just like an old monk in his meditation. It is clear that it is up to Zhao Chen to say it himself, everything that should be said has been said, and it is up to Zhao Chen himself to dispel his doubts or not.

Seeing Lao Qin's appearance, Zhao Chen still didn't understand in his heart, so he hurriedly took two steps forward and bowed loudly: "The judgment of the Weichen Gewu Academy, see Your Majesty!" ”

"Hmm!" Li Er's nose hummed painlessly, but he didn't rush to let Zhao Chen stand up, but asked: "I have heard what Qin Aiqing said, and now I want to hear you say it in person!" ”

"Yes!" Zhao Chen said yes respectfully, and then said in a loud voice: "Weichen has been adopted by the master since he was a child, and he has lived in the valley with the master since he was a child..."

"I'm not going to hear this nonsense!" Unexpectedly, Zhao Chen had just started when he was coldly interrupted by Li Er, and then Li Er's obviously unhappy voice sounded in the hall.

"I wonder what Your Majesty wants to hear?" Zhao Chen raised his head blankly, looked at Li Er, and asked cautiously.

"What I want to hear is, what is the relationship between your master and apprentice and the Hidden Sect?" Li Er's face was gloomy, he glared at Zhao Chen below, and opened his mouth coldly.

"Your Majesty Mingjian, Wechen also inadvertently heard Qin Gong mention it today, and then I knew the existence of the Hidden Gate, and Wechen had never heard the word Hidden Door before!"

"Could it be that your master never mentioned the hidden door?"

"Nope!" Zhao Chen shook his head and said with great certainty: "Wechen has been with the master since he was a child, and the master and his old man have never said a word about this hidden door in front of Wechen!" ”

When Li Er heard this, he looked at Zhao Chen coldly, as if he was trying his best to see a clue from Zhao Chen's face, but he had no choice but to look at it for a long time, and he only saw Zhao Chen's calm face.

After a slight pause, Li Er sighed and said, "Then let's talk about what kind of person your master is!" ”

"Wechen actually doesn't know how to describe the master and his old man, since Wechen remembers, the master seems to be like that, fishing every day, planting vegetables, and teaching Wechen to read and write in his spare time, as if he has never left the valley one step!"

Li Er listened to Zhao Chen's words, suddenly frowned, and repeated the old words: "You really can't find that valley?" ”

Seeing Zhao Chen shaking his head, Li Er couldn't help but be a little disappointed, in fact, the hundred cavalry he sent had already returned from the depths of the Qinling Mountains, according to the return of the hundred cavalry spies who came back, they were all looking for the traces left by Zhao Chen all the way, and they did find the place where Zhao Chen said that they appeared at the beginning.

However, they were in that place, as Zhao Chen said, and in the end, they found nothing, just like Zhao Chen appeared out of thin air.

"Keep talking about your master!" Li Er sighed in disappointment, and then looked at Zhao Chen and spoke.

What else to say? Zhao Chen blinked, didn't he make it clear? What else to say? But since Li Erdu said that he wanted to continue, he had to continue to talk.

He took a sharp breath in his heart, and as soon as he looked up at Li Er, he said loudly: "Although Weichen doesn't know the master's past, Weichen knows that the master is a scholar and a man, and it has never been seen before, especially in Gewu, which has reached an unimaginable level!" ”

"Just like the steelmaking technique that Wei Chen presented to His Majesty a few days ago, if in the eyes of the master, it is actually just a child's farce, and it is just scrap copper and rotten iron!"

After Zhao Chen finished saying this, he couldn't help but secretly observe Li Er's expression, and sure enough, he saw Li Er dumbfounded, obviously frightened by Zhao Chen's scrap copper and rotten iron.

Imagine being regarded as an incomparably precious thing by yourself, but it turns out that it is a piece of scrap copper and rotten iron in other people's places, and whoever you change it to will probably not be much better at this time.

"Go on!" Li Er clenched his fists tightly, stared straight at Zhao Chen, endured the mania in his heart, and continued.

When Zhao Chen heard this, he took a slight breath, and suddenly said seriously: "The master once said that the things in the world are unreasonable. However, there is no end to reason, so there is no end to it! ”

"For example, when our ancestors didn't find fire, they could only eat it alive, and then they found fire, so they learned to barbecue, and then they discovered food, so they learned to farm, learned to build houses, and learned to build cars..."

"These are all things?" Li Er's eyes were obviously not good, the corners of his mouth were slightly upturned, he looked at Zhao Chen coldly, and asked.

"Yes!" Zhao Chen took a breath, pretended not to see Li Er's unkind gaze, and continued: "This is all realized by the ancestors from survival little by little, but this process is very long! Why? ”

"A piece of wood, if we don't think about it, it's just a piece of wood, but if we think about it, this wood will have many, many uses to build houses, cars, pen holders, household goods, and many, many more!"

"This is Gewu, Gewu is poor, as long as we use the eyes of Gewu to discover, everything in the world will be exhausted, and for example, the telescope on His Majesty's desk, in addition to seeing things in the distance through it, has Your Majesty ever found that there are other functions?"

Zhao Chen said, his eyes suddenly saw the telescope placed on the desk in front of Li Er, so he said.

Hearing Zhao Chen's words, Li Er subconsciously set his eyes on the telescope, and couldn't help frowning, I really don't know, what else can this thing used for looking far away!

"As long as Weichen is willing, Weichen can burn the entire Qinling Mountains with this telescope alone!" Zhao Chen saw Li Er's inquiring gaze and said confidently. didn't dare to say it, if he burned this hall, as long as he said it, without Li Er opening his mouth, Lao Qin would immediately drag him out and cut him down.

"Shaft dares!" As soon as Zhao Chen's words fell, before Li Er could speak, Lao Qin, who was listening, stood up angrily, pointed at Zhao Chen, and immediately scolded loudly.

"I want to see how to burn Qinling!" Li Er raised his hand to let the angry old Qin sit down, waved his hand to ask the chamberlain to bring a log, and then handed the telescope to Zhao Chen, looking at Zhao Chen with a sneer.

Zhao Chen's heart blossomed, and he finally led Li Er from one strange circle to another, as long as you see this, I don't believe you are not moved.

Although he thought so in his heart, he still had a serious attitude on the surface.

He took the telescope from the hand of the chamberlain, carefully removed one of the lenses in front of him, walked out into the sunlight with the mirror, held the mirror to the sunlight, and immediately a white dot appeared on the log on the ground.

At this time, the hall was quiet, whether it was Li Er or Lao Qin, they all frowned and looked at the white spot, not understanding how that white spot could ignite a log.

However, the doubts in my heart did not last long, and I smelled the smell of burning wood in my nose, and then I was surprised to see a puff of green smoke rising from the wood.

It's on! It's really burning!

Lao Qin looked at this scene in surprise, the muscles of his cheeks trembled vigorously, and being able to witness the appearance of the rootless fire with his own eyes simply subverted Lao Qin's worldview.

Li Er's fists clenched vigorously, although he was also as excited as Old Qin Shubao in his heart, he gritted his teeth and turned his inquiring gaze to Zhao Chen, waiting for Zhao Chen to answer his doubts.

"Your Majesty, the truth here is actually very simple!" Zhao Chen looked at His Majesty Li Er, and said seriously and seriously: "Weichen is just gathering sunlight through this lens, and it is actually the effect of light!" ”

Seeing Li Er frowning, Zhao Chen had no choice but to think about it and said: "It's like a glass of water, if you poke a small hole at the bottom of the cup and squeeze it with something, then the water will spray out from the small hole that is poked out, and if the seal is good enough, then the power of the water jet sprayed from the small hole will increase!" ”

"In the same way, Weichen just gathered sunlight through this lens, and then directly ignited the wood through sunlight!"

"This is the way of Gewu?" Li Er listened to the explanation, and he didn't know whether he really understood or fakely understood, but in short, he sighed and asked with a slightly complicated expression.

"Yes!" Zhao Chen shook his head and said: "This is just a small path of Gewu, compared to the real Dao of Gewu, it is simply unknowing!" Wechen once heard the master say that Gewu is exhausted, and it is not a strange thing that people can go to heaven at that time! ”

"That's something that only the Immortal Family can do!" Li Er looked at Zhao Chen with disdainful eyes and said with a sneer.

When Zhao Chen heard this, he couldn't help but feel a little annoyed, the ancients were not good at this point, and when they encountered something that was difficult for them to understand, they didn't think about it, and pushed it to the gods and ghosts, and then offered delicious food and drink, and finally fed the birds.

"Your Majesty, the master and his old man only respect heaven and earth in this life, and do not believe in ghosts and gods! The person said by the master can fly in the sky, and Weichen believes what the master said, it is indeed not a difficult thing! ”

When Li Er heard Zhao Chen's words, he looked at Zhao Chen thoughtfully, and he didn't know if he heard it, Zhao Chen continued to say below: "In fact, this truth is the same as Weichen ignited wood with the help of light just now, the same person can fly in the sky, and he can use the power of the wind!" For example, paper kites, paper kites can fly in the sky, that is with the help of the power of the wind! ”

"Suppose, according to the principle of the paper kite, we make a large paper kite that is enough to drag people, with the help of the power of the wind, can it also fly in the sky?"

Zhao Chen was still talking about his knowledge of things below, but he didn't expect Li Er above, listening to it, suddenly interrupted Zhao Chen's words, stared straight at Zhao Chen, and asked with a solemn expression.

"Fang Cai, I heard you say that your master only respects heaven and earth all his life, and does not believe in ghosts and gods, yes or no?"

When Zhao Chen heard this, he almost lost his breath, he said it here for a long time, you didn't listen to a word, so you remembered this sentence.

At that moment, he took a breath, lowered his head and said: "Yes, the master has studied Gewu all his life, and believes that all things in heaven and earth exist in reason, and there are traces to follow, so he only respects heaven and earth, and does not believe in ghosts and gods!" ”

"That is the case, I will give you one thing, if you solve it for me, I will consider your way of things!" When Li Er heard this, he suddenly took a breath, looked directly at Zhao Chen, and said like a bargain.

When Zhao Chen heard this, he wailed in his heart, obviously this Gewu has really developed, and it is you, the ruler of the Tang Dynasty, who have benefited, why has it become my way of Gewu.

However, in order for the way of Gewu to be valued in Datang, in desperation, Zhao Chen had no choice but to nod and agree!