"Daoist Yuan!" Feng Daiwen stood up and shouted worriedly.

"It's okay, let him go, as long as he can think clearly, he will be a generation of grandmasters in the future, because when the time comes, he will not live behind the figure of his predecessors, he will be himself." Qingyun stopped Feng Daiwen, looked at Yuan Tiangang's back with envy, and said in the clouds.

When he turned around, he saw Li Chunfeng looking at himself incomprehensibly, and explained: "In the past, Brother Yuan Dao used it, and what he learned was similar to that of his predecessors, but after he woke up this time, he will form his own thoughts, so he will say that he is about to become a generation of grandmasters." ”

Only then did Li Chunfeng come to his senses, and then asked Feng Daiwen: "Master Hou, you said that the predecessors used all the things that came from nature?" ”

"Yes, before Qin, every country was so small, and there were definitely not as many things as there are now, but it is precisely because there are many countries that there is competition, and the country is also vigorous. Feng Daiwen said with certainty.

"Defending the country is reasonable, if the world is invincible, after a long time, the armament will be lax, the officials will fight, only when there is a foreign existence, will they work together, "Sima Law" in the book said: "Although the country is big, the warlike will die; Although the world is safe, forgetting the war will be dangerous. And Mencius also said that life is born in sorrow and death is in peace." Li Shimin quoted the scriptures and nodded.

"Father Emperor Shengming, so the sons have always agreed that a hundred flowers bloom in the Spring and Autumn Period, and a hundred schools of thought contend, as long as it is healthy competition, it is very conducive to the development of the country, but unfortunately many useful things have been lost." Feng Daiwen sighed.

"Can Master Hou give some advice on the way of nature?" Li Chunfeng is young after all, and he is very interested in many things that Feng Daiwen took out and explained the knowledge, and asked for advice.

"It's not early today, and we can't delay everyone's rest, I'll explain it to you slowly another day." Feng Daiwen looked at the people who had been listening to their chats quietly, and saw Li Shimin and the eldest grandson were still here, and he didn't want to delay them to rest, after all, it was cold in winter.

Li Shimin has always been very interested in what Feng Daiwen has learned, and when he saw Feng Daiwen, he was a little embarrassed, so he said: "It's okay, if you want to go back, go back, it's not cold when it's roasted, and listen to you for a while." ”

Although Li Shimin said that he wanted to stay, he was still very concerned about letting his eldest grandson go back to rest.

Seeing that everyone had no intention of leaving, Feng Daiwen had no choice but to continue: "I don't know the way of nature, but I have heard a lot from the family teacher, and the family teacher said that the best use of nature is water and fire, such as the hydraulic mill that has just been built by the craftsman's workshop, the same principle, the water wheel is built on the boat, driven by people or animals, it can move forward without relying on the sail, and it does not need so many people to paddle."

There is also sunlight I have experimented with Qingyun Daochang, sunlight through a magnifying glass, can easily ignite dead leaves, think about it, if we can use the same thing to make water hot, this may save a lot of fire, and if there is no flint in the ice and snow, we can use ice cubes to grind into a magnifying glass, and use sunlight to ignite the fire, because this is just the use of the magnifying glass's concentrating effect plus the temperature of the sun. ”

Every time Feng Daiwen began to talk about some knowledge or suggestions, Li Shimin always liked to have people record them, so that he could watch and think at any time in the future.

This time is no exception, Li Shimin's attendants are very aware of his habits, no need to command, they have already put pen to paper, of course, they don't understand the master's habits, they generally don't live long, and if they stay in the palace for a long time, there is no one who is not able to observe words and looks, and is exquisite.

"Can you use a magnifying glass to shine through the light and set fire to the thatched houses in the city?" Li Tai asked whimsically.

"This shouldn't work, you have to be very close to the light, and the light will disperse when it's far away, but as long as you have a way to keep the light together, of course you can, so someone needs to study it." Feng Daiwen thought about it seriously and said.

"Water, fire, and light can be used, so can wind and thunder also be used?" The more Li Chunfeng listened, the more he liked it, and couldn't help but ask again.

"The wind is generally used on the boat, but where the wind is strong, you can also borrow the wind to pump water and grind, as long as you are willing to study everything can have a new role, if the thunder and lightning can be controlled one day, you can use him to do many things, but this is the business of the children and grandchildren, we are just exploring some roads for them." Feng Daiwen thinks about it, it is indeed difficult to do some things now.

"Isn't there one thing that makes it easy for us?" Li Chunfeng said disappointedly.

"Since Daochang Li is interested, there are really two things here that you need to study." Feng Daiwen said happily when he saw that someone had thrown himself into the net.

Li Chunfeng himself shouted interest in these, and was disappointed, and when he heard Feng Daiwen say, his eyes immediately lit up and he clenched his fists and said, "Master Hou, please speak!" ”

"The first research was to assemble these concave and convex mirrors to make telescopes that could see the stars clearly, and magnifying glasses that could see invisible to the naked eye, or could not see clearly.

The second one is a bit more troublesome, and it requires the cooperation of many people, you see, after the water in this pot is boiled, the steam in it can lift the lid of the pot, and if a huge sealing machine is made of steel, can it generate a huge power to drive horse-drawn carriages and ships? Feng Daiwen was very eager for these crazy Taoist priests to surprise him, so he brought up the concept of the steam engine.

"This, this is very likely to be done, with this gas to promote, plus some wheels to drive, it is very likely to be done." The bluestone demon looked at the kettle in a daze, and said with dancing hands.

"The junior brother once unintentionally got a copy of the Mojia Mechanism, and he is very interested in various mechanisms and instruments." Qingyun saw that everyone looked at Qingshi in surprise, so he explained.

Talent! Feng Daiwen was very surprised, he didn't expect that there was such a talent around him, and said happily: "It is said that the public loss class once made a wooden bird flying in the sky, and I think there is also a study of mechanism techniques, and it just so happens that there is his successor in the house, and the bluestone Taoist might as well study and study with them, what do you need, just ask for it." ”

"The Yan family is also a generational metropolis, I have drawn a place in the craftsman's workshop, you study it together, it just so happens that there are many masters in the craftsman's workshop, you can discuss it." Li Shimin listened to Feng Daiwen's introduction, firstly, because he believed that Feng Daiwen would not be untargeted, and secondly, he was also very interested in the car that could be walked without oxen and horses, and decided to give strong support.

"Thank you, thank you!" Qingshi smiled and thanked him again and again.

Things were almost discussed, and under Li Shimin's greeting, everyone dispersed......

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