The group entered the hall, and Xu Hui had prepared wine and food.

Xu Hui naturally accompanied Li Shimin on the top of the head.

Li Yuanai sat alone in the lower head, feeling a little uncomfortable.

This single dog is really unrighteous. You have to feed dog food for a meal?

Xu Hui poured herself a glass of wine and said, "I have asked Your Majesty many times to invite my uncle to the banquet, thanking her for helping Xidao. Today, I finally got what I wish, I wish you a cup of mine."

Xidao is talking about Xu Qidan, which is his word.

Li Yuanai also guessed one or two and raised his glass to return the gift: "It's too obvious to be too arrogant. In this incident, Xu Shidu was the most innocent. He was involved in it for nothing and threw dirty water on it. No one would be indifferent. Besides, Shidu was upright and not afraid of shadows. He had a clear conscience, and even if I hadn't been involved in it, he wouldn't be detained for too long."

Xu Hui said softly: "It is because my uncle is noble in virtue. How can I stay indifferent because of my uncle's righteousness? That's too ignorant."

Li Yuanai asked Xu Hui to persuade him in a few words and said, "I have accepted that kind of thanks."

"How?" Li Shimin looked at Xu Hui with a smile.

Xu Hui smiled and nodded: "Uncle Wang of Shang is really great, please follow His Majesty's arrangement."

Li Yuanai was inexplicably confused.

Li Shimin smiled and said, "Are you still telling me that there is no official concubine? Is it because the emperor brother, the father and brother, did not spend time on you? Humph, I really don't know what's wrong. It's because the emperor brother was spend time on it that it has been delayed until now. Otherwise, I would just find a minister and a daughter to issue an edict to marry, and the other party can't accept it?"

Li Yuanai hurriedly said, "I don't dare to think so."

Li Shimin said: "There is a young girl in Chongrong's family named Xu Yu. She has been smart since childhood and has a beautiful appearance. She is elegant and elegant in writing, and is also virtuous and kind. It is precisely when she is waiting to marry, and she comes to the house to marry. The Xu family is also a former honor in the Southern Dynasty and has a status of no less than that of other families. Only such a woman is worthy of being the Princess of Shang."

Only then did Li Yuanai understand the whole story, but there was no too much resistance in his heart.

I have been in this era for almost four years and have already adapted to the days here.

The so-called free love in later generations was almost empty talk in this era.

Because it is impossible for you to meet a normal girl's house on the street.

You really want to meet a woman walking alone and dressed in gorgeous clothes on the street.

Needless to say, she is probably a time traveler, and another layer may be an elopement who can soak the pig cage. The bad guys in each house, Wu Hou was ready to catch someone when she appeared.

There are not without women on the streets of Chang'an City, but most of them are water-carrying, vegetables, and carts to transport goods. There are wine sellers, cake sellers, female tailors, and hotel owners. In short, those who want to show up outside are middle and lower-class women who work with their own hands.

Unless you go to the Yuan Dynasty, Qingming Festival, and Qianqiu Festival every year, you will never meet a lady from a family on the street.

Even during the festival, there are no ladies from any family who are alone on the street. Even if there are urgent matters to go out, they still have to be surrounded by maids and old women. Moreover, the ladies must wear a wide-brimmed hat, which has a long veil hanging from the brim of the hat to cover their whole body to prevent passers-by from peeping...

It is a shame for a real lady to be seen by an unrelated man.

Don’t say you go out to show it to strangers. Even if you stay at your home and have unrecognized male guests, as long as you are not a blood relative within a few generations, you must avoid it to avoid quarrels...

As fierce as Wu Zetian became the emperor, she had to discuss state affairs with her ministers, and she had to pretend to hang a curtain in the middle.

This nobleman recruited a son-in-law and invited young talents to pass by the mansion. The ladies just secretly peeped behind the window. It was impossible to come out to meet...

Not to mention that the Tang Dynasty had an open concept and a high status for women.

That was the Kaiyuan Dynasty. In the Kaiyuan Dynasty, the trend was indeed developed. Beauties rode horses on a horse in rich clothes and heavy makeup, which was even better. They simply disguised themselves as men, put on their husbands' boots and robes, went out and fucked, and swept the streets and made a fortune.

But now it is the Zhenguan Dynasty, and the situation is completely different.

Therefore, if you want to have a chance encounter on the street and have a free relationship, it is pure nonsense. Unless you are interested in a brothel woman or a rural woman...

Anyway, Li Yuanai has been in this era for so many years and has never seen the true appearance of a lady from a wealthy family who has been back and forth on the streets.

In this case, blind marriage is inevitable and inevitable.

Especially Li Yuanai's identity, he can usually play around with him. No one cares about whether he goes to a brothel or goes to a singer Hu Tian and Hu Di in his own house. However, the princess has to be married to the royal family in the overall face, and he must be married by a mediator...

Li Yuan and Li Jiancheng have passed away. As the eldest brother, Li Shimin is like his father, and marrying the official concubine is his business.

Therefore, Li Yuanai has been mentally prepared for a long time, hoping that his second brother, who is cheap, can find a beautiful one.

At least be pleasing to the eye first, and then cultivate feelings.

Seeing Li Shimin praise Xu Yu to the sky, Li Yuanai secretly became happy, but said, "If you let the emperor say this, I feel that my brother is not worthy of her."

Li Shimin said without hesitation: "Nonsense, this is called the combination of heaven. The sixteenth brother is my Li hero. He has made contributions to the court and made great contributions to the world. How can he not be worthy of it..."

Xu Hui also smiled and said, "I feel that this is true. My younger sister has extraordinary talent and a high vision. Even a wise king like her uncle can't catch her eyes."

"Then... everything is up to the arrangement of the emperor." Li Yuanai suppressed the little expectation in his heart. An intellectual beauty like Xu Hui is indeed the best choice for his wife. Xu Yu is Xu Hui's sister, so there shouldn't be a big difference.

Li Shimin made the final decision: "This matter was decided like this. Chongrong had already told her father about it. Her father had no objection when he heard it was you. However, it is not urgent to marry him. It is better to put state affairs first. At least wait for the sluice matter to pass before planning the time."

Li Yuanai has no objection. He is only eighteen now. He has just become an adult in his later generations and has not yet entered society. Moreover, the matter of the sluice is indeed imminent.

In order to inherit the future of the Tang Dynasty, Li Shimin gave up the throne the next day and allowed Li Zhi to enter the Eastern Palace and incorporated it into the Eastern Palace, just like Li Chengqian at the time, and ordered all officials of the fifth rank or above in the court, who had descendants, to enter the Eastern Palace as ministers, adding to the momentum of the Eastern Palace.

Changsun Wuji, Fang Xuanling, Cen Wenben, Ma Zhou and others were relieved when they saw this.

The prince finally returned to his post...

For this, he thanked Li Yuanai specifically for this.

************

This day.

Yan Lide took the information in his hand with a lot of worries and came to Li Yuanai and handed it to him.

When Li Yuanai looked at it, he found that it was the experimental record of the dam.

After Li Yuanai's influence, the current Ministry of Works focuses on experiments.

Use experiments to determine whether it is reasonable and then take action.

The sluice is a simple thing to say. The real difficulty is not the sluice, but a dam that has to withstand hundreds of tons of water.

The load bearing of the dam directly affects the total amount of water storage and drainage.

This problem arises.

The most rigid and softer one is water.

Water can erode all things, and how the dam does not erode the water flow is the top priority.

Yan Lide has been doing experiments in this area.

They used their commonly used rammed earth and blue bricks to build the dam, but they all failed.

Yan Lide even brought Fuhua concrete from Hu Shangshang in the Western Regions.

Fujim, also known as Rome, is one of the great powers with a long history. They are different from China. They are used to using stone to repair houses and city walls, so they use soil to the Chinese.

The highest Roman concrete is seven-combination soil, which is a soil that combines seven impurities, which is very strong. It is several levels stronger than the rammed earth used by the Chinese.

But judging from the reports from Yan Lide, the results are not obvious.

Yan Lide said heavily: "This is the best result. You can use it in the short term and it should last for five or six years."

Li Yuanai shook his head and said, "It is better to use this kind of concrete than to build a city wall, using blue bricks and glutinous rice mortar. At least it is convenient, and we can provide the materials in China. In order to build a dam, we specially transported soil from thousands of miles away? This is too expensive..."

Yan Lide sighed helplessly: "The viscosity of glutinous rice mortar is enough, but it cannot withstand the erosion of water. Being able to support it for three years is already the limit."

Li Yuanai said: "So a material is needed to replace glutinous rice."

Yan Lide suddenly remembered that Li Yuanai applied for a fee from the Ministry of Revenue not long ago to mine volcanic stones, and said in a daze: "It's not a volcanic stone, right?"

Li Yuanai said: "To be precise, volcanic ash. Volcanic stones are indeed the best choice for making dams, but the real core is volcanic ash. Volcanic stones are just icing on the cake."

Yan Lide said with a confused look on his face: "Is volcanic ash possible?"

Li Yuanai smiled confidently. As an important cementitious material, it is widely used in civil engineering, water conservancy, national defense and other projects. How could it not be possible?

In fact, Li Yuanai was a little confused here. Cement can be made, and it is very simple. As long as the temperature is higher than 1,400 to 500 degrees, ordinary limestone can be made into cement.

But at the critical moment, Li Yuanai discovered that the Tang Dynasty's smelting technology was not enough to generate high temperatures of 1,400 to 500 degrees. One thousand degrees was almost the limit.

Fortunately, Li Yuanai remembered that China was a volcanic country, but most of it became extinct volcanoes. However, during the Tang Dynasty, there were still many active volcanoes in the territory.

The materials melted by the heat of active volcanoes are natural gelling materials that can resist the erosion of fresh water or salt water, commonly known as cement.

Li Yuanai said: "Don't worry, there are about three days left, and the first batch of volcanic ash and volcanic stones will arrive. As long as we successfully prepare, we will set off to the canal for on-site inspection and select a site to build a dam."

Yan Lide knew that although he was Li Yuanai's boss, he was the real person in charge of the dam and was fully responsible for it.

He had no right to ask, but he was also looking forward to it. See if this young man who had repeatedly created miracles could really defeat the fierce water flow.
Chapter completed!