In the Daming Palace, after the monopoly maintenance of a group of craftsmen in Nanshan Construction Engineering, all the septic tanks have been transformed.

The biogas produced by the digesters converted from these septic tanks is used to supply special biogas lamps.

It is said that it is a biogas lamp, but it is actually a very simple biogas combustion device.

Once the biogas lamp is lit, it is very inconvenient to control its opening and closing.

However, even if it is so, it can be regarded as a historic progress.

"A-Niang, this glass lampshade is a biogas lamp, and the wick inside is a biogas pipe made of copper pipes, no matter how windy or rainy, this biogas lamp will not go out, and it doesn't need to be replaced like a whale oil candle when it burns out, and you don't have to worry about the dark night in Daming Palace in the future."

The son was very proud to walk around the Daming Palace with Empress Changsun and others, and praised the methane lamp that had just been lit.

It stands to reason that this biogas lamp has nothing to do with her, but this thing was made by Li Kuan, and the son felt that his face was also bright.

"Wouldn't it cost a lot of copper to transport biogas through copper pipes?"

Copper and money can basically be equated.

So when Empress Changsun heard that the wick of this biogas lamp was made of copper, her first reaction was that it was too wasteful.

"A-Niang, it's just that the wick and the part inside the digester are made of copper, and the rest is iron pipes. In order to make this iron pipe not so easy to corrode, Nanshan Construction Engineering also specially painted three layers of paint on the iron pipe. In fact, this is still taking into account the absolute safety of transportation, otherwise it is possible to directly use ceramic pipes, listening to Di Renjie said that some buildings under construction in the workshop city use a combination of ceramic pipes and copper pipes to transport biogas. ”

The son of the son can be described as a clear door for all kinds of things related to the Chu Palace.

Usually except for Daming Palace, she doesn't have any other places to go, nothing more than to go to Li Kuan or Wu Guo, or to play with Xiaomai.

Of course, as Xiaocorn's senior brother, Di Renjie also often meets her.

Therefore, a lot of information about various industries in the Chu Palace's mansion was told to her by Di Renjie.

"A-Niang, the biogas digester only needs to cost more at the beginning, and once it is built, the benefits are also very obvious. Especially for people outside the Daming Palace, the biogas digester can not only be used to provide biogas for the biogas lamp, but also to cook water. A family with a biogas digester does not need to use honeycomb coal almost all year round, and there is no need to burn the accident of carbon poison in the coal stove, and the benefits are too many. ”

Li Zhi also touted the benefits of the biogas digester.

Although he is 14 years old this year, he still has no sense of presence in the DPRK.

Many people know that Li Shimin is more fond of Princess Jinyang and His Royal Highness King Jin, but that's all.

Li Shimin's love for Li Zhi is different from Li Tai.

No one in the court thought that one day Li Zhi would have the opportunity to sit on the throne.

In everyone's opinion, the only suspense is whether Li Chengqian, the position of the prince, will be pulled down by Li Tai.

"This Kuan'er is engaged in education, it is really a very set, not to mention that the Lion Mountain Academy is in full swing, and various primary schools and Mongolian schools have also become famous, and now even the Future Star Kindergarten has become the object of attention of the nobles of Chang'an City. However, these are not the things I admire the most. ”

Empress Eldest Sun looked at Li Zhi and Li Mingda a little dotingly.

"A-Niang, what do you admire most about your second brother?"

The son looked at the eldest grandson queen with curiosity on his face. Wen Ting Pavilion

She really never thought about this question.

"What I admire most about him is that he is always able to make the people around him believe in people and even worship him; Look at the two of you, you almost think of Kuan'er as your own master. ”

With the gradual expansion of the strength of the Chu Palace, it would be false to say that Empress Changsun was not wary at all.

It's just that as the current queen, she still has confidence in Li Shimin's ability to control the world.

In addition, Li Kuan can be regarded as a lifesaver for himself, so Empress Changsun has never dealt with Li Kuan, not even a trip.

In the context of such a stiff relationship between the eldest grandson's family and the Chu Palace, she was able to do this, and she deserved to be taken by later generations as a "virtuous queen".

"I want to worship my second brother as a teacher, but unfortunately he doesn't accept it. Look at Liu Yuan, Di Renjie, Qin Huaidao, Lu Zhaolin, none of them are fuel-efficient lamps, the second brother won't accept me as an apprentice because my level is not enough, right? ”

Hearing Li Zhi say this, Empress Eldest Sun didn't want to speak.

None of his sons is as good as their father, who is alive.

……

In the palace of the king of Chu, Wu Meiniang and Li Kuan sat in the study and chatted.

As the influence of the Chu Wangfu grows, there will inevitably be more and more things involved.

Sometimes, it's not that Li Kuan doesn't want to ignore it.

To put it mildly, the Chu Wangfu is doing something new, and now there are people staring at it.

"Lord Wang, in the Daming Palace to promote biogas lamps, I think there is actually a risk, after all, biogas can be burned, in case someone uses it one day, it may be counted on your head at that time."

Although it was a little too late to speak now, Wu Meiniang still couldn't hold back.

"Transportation, lighting, power, disease, and food are the most critical things that affect the development of Datang. Not to mention the rest, just the lighting, although the current whale oil candles make the night of many people's homes no longer dark, but there are still not many ordinary people who can afford candles.

Although these people who can't afford candles are even more unlikely to be able to afford biogas lamps, the promotion of biogas lamps in Daming Palace is an exploration of new lighting, and one day, there will be a safer, more efficient, and cheaper way of lighting. I think we should be able to see it in our lifetimes. ”

With Wu Meiniang, Li Kuan is still willing to open his heart to communicate.

Many times, she can also give herself some different opinions, so that some of her resolutions will not be incompatible with the atmosphere of Datang.

"Lord, please forgive Mei Niang for saying something inappropriate, although these factors are indeed important factors affecting the development of the Tang Dynasty, shouldn't this be something that Your Majesty or His Royal Highness the Crown Prince should worry about? You're just a prince. ”

After Wu Meiniang finished speaking, her eyes stared at Li Kuan without turning, hoping to see something on his face.

And in her heart, she is actually very nervous.

What is the current situation in the Chu Palace, she naturally knows very well.

To put it mildly, as long as Li Kuan has a heart, some things are not impossible.

Or, if Li Kuan really just wants to be an idle prince, then it shouldn't be like this.

Such a bullish prince, apart from Li Shimin, which prince has the confidence to control the situation in his own hands after ascending the throne?