In the Hanyuan Palace, a group of ministers began to sweat.

When Li Kuan saw this scene, he felt that it was better to take everyone outside quickly, so as not to heat them up.

However, Li Yuan was full of curiosity.

"Kuan'er, there is no stove in this Hanyuan Palace, why is it as warm as spring, and it is so comfortable to stay?"

Li Yuan couldn't help but stretch his old arms and legs, and was a little more satisfied with Daming Palace.

"Your Majesty, under the main palace of this Daming Palace, copper pipes are laid, and there is a special boiler room next to it to supply hot water to these copper pipes, so the palace will not feel cold." Li Kuan smiled and explained to Li Yuan, "Grandfather Huang might as well take off his shoes and feel the heat on this floor." ”

"Don't be rude!" Li Shimin glared at Li Kuan, feeling that this guy wanted to get out of the moth again.

"It's okay, take it off, feel it first."

When Li Yuan said this, Li Shimin naturally couldn't object, and even he simply leaned down and took off Li Yuan's shoes.

This scene of filial piety immediately conquered many ministers in the field, and felt that His Majesty was indeed a Ming monarch today.

Li Kuan was also stunned as he watched from the sidelines.

It's you who says no, and it's you who squats down and takes off your shoes with quick movements.

Li Shimin's reaction speed has to be convinced.

Not only did it not lose a little of the dignity of the emperor, but it had an unexpected effect.

Even Li Yuan himself couldn't help but reduce his dissatisfaction with this son.

From the small to the big, it seems that Li Shimin is still very extraordinary to be able to become the first emperor of the ages.

Li Yuan was wearing socks and gently stepped on the wooden floor, feeling a burst of warmth coming from under his feet.

At this age, not to mention winter, even summer, it is often cold hands and feet.

The palace where he lived before was relatively cold, and Li Yuan felt very uncomfortable all day, which was also an important reason why he would get sick after the autumn of this year.

Now, stepping on the warm wooden floor and feeling the temperature from the soles of his feet, Li Yuan felt that his body was a little lighter.

The emperor has taken off his shoes, and others are naturally doing the same.

Suddenly, there was one more ...... in the Hanyuan Hall

Well, it should smell like stinky feet!

"Kuan'er, laying copper pipes under the floor and using a boiler to heat the copper pipes is really amazing, with this, I am no longer afraid of the cold of winter."

Li Kuan walked back and forth in the hall a few times in socks like a child.

It may be difficult for people to pay attention to the problem of heating in ancient times, and even Li Yuan, the emperor, is happy about this, not to mention the reaction of other courtiers.

"The heating method of this Daming Palace is so second, and the official will also renovate the bedroom and study at home when he goes back."

"His Royal Highness the King of Chu is really extravagant, and he actually uses a copper pipe as a water pipe."

"It's too comfortable to stay in this Hanyuan Palace, if the court meeting is held here, then I'd rather come to the court earlier."

"This Daming Palace, the level of luxury is absolutely the highest in Chang'an."

Li Kuan didn't know what these ministers were thinking, anyway, Li Shimin, who was standing on the side, was rare and asked a little hesitantly, "Kuan'er, is it possible for this Taiji Palace palace to also install this kind of heating device?" ”

"Your Majesty, this heating pipe is laid under the floor, if you want to install it, you basically have to open the entire palace, and you have to renovate the boiler room next to it, and most importantly, if the insulation in the room is not done well, even if the floor is very hot, the room is still relatively cold."

Li Kuan didn't want to pour cold water on Li Shimin, but thinking about the palaces in the Taiji Palace that had fallen into disrepair for a long time, if they were really renovated, it would be better to rebuild them.

"Oh, I see!"

There is no need for Li Kuanduo to say, Li Shimin will know the answer.

"Kuan'er, do other palaces in Daming Palace have such heating?"

Li Yuan turned around a few times, and felt that although Hanyuan Hall was good, he must have stayed more in the study and bedroom usually, so he was concerned about the heating situation of other palaces.

"Imperial grandfather, the main palaces of Daming Palace all have this heating facility, but some side halls are not arranged. It is really too copper-consuming for this heating waterway, and the grandson also collected many ways to get the copper ingots used in the construction of Daming Palace. ”

The most mature casting technology in this year is the casting of bronze.

This is a history of thousands of years.

As for the iron water pipes commonly used in later generations, if you want to make them now, then don't think about it.

"It's made of copper, it's really expensive."

Li Yuan is also an understanding person, so he naturally knows that Datang is originally short of copper, and copper can be directly equated with money.

Using copper to make water pipes is equivalent to using money to lay the floor.

"Erlang, I heard that Kuan'er has purchased a lot of land near the Wei River in recent years, so isn't there still a large piece of land on the north side of the Wei River near the courtyard of the Chu Wangfu? Along with that hill, give it to Kuan'er. ”

Li Yuan, who has always been non-interfering in political affairs, made a rare request to Li Shimin.

"Erchen understands that Kuan'er has made a lot of credit this time, and he really deserves a reward!"

It is not a big deal to be left and right, and Li Shimin naturally will not sing against Li Yuan on this occasion.

On the contrary, at this moment, he had the idea that it would be good if he could stay in Hanyuan Hall all the time.

The conversation between Li Yuan's father and son was also heard by the ministers around him.

However, compared with the expenses of the Chu Palace's palace in Daming Palace, no one jumped out to oppose it.

Even Wei Zheng, who has always been harsh, felt that this reward was not exaggerated.

"Grandfather Huang, this is past the Hanyuan Palace, there is a small garden in the middle, and then it leads to the Xuanzheng Palace, do you want to go to the garden and take a turn again?"

In the Hanyuan Palace, there are not many things to see, Li Kuan feels that today is not a court meeting, and it is meaningless for a group of people to stay here for a long time.

Don't you see a lot of people sweating?

"Okay, I'll go with you to see what else is special about this Daming Palace."

Li Yuan spoke, and the group quickly left the Hanyuan Palace.

Although it is already early winter, most of the trees in the north have lost their leaves.

But in the Daming Palace, Li Kuan asked people to transplant a batch of masson pines, so when you look at it, it is not rows of smooth tree trunks.

Of course, if it is in the Taiji Palace, between the palaces and the palaces, there is basically no slick tree trunk.

Even the Forbidden City, which was famous in later generations, in fact, there were basically no trees to see except for the back garden.

It is said that this is the need for fire and assassin protection, as well as protection against voyeurism.

However, Li Kuan felt that if there were no trees in the palace, it would be too boring and uncomfortable to live in, so there were a lot of flowers and trees in the Daming Palace, which was somewhat of a Jiangnan garden in later generations.

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