Li Yuanjia still has some understanding of the manufacturing method of glass.

However, this understanding is limited to knowing that the glass is made of quartz sand...... That is, it is made by melting sand. Of course, this common sense will be known to anyone who likes to read online novels in the future. It's just that Li Yuanjia knows more, for example, he knows that the melting point of quartz sand is 1,750 degrees, and the ancient technology can't reach it at all, so it is necessary to use flux, that is, plant ash and other trona, and then add some limestone as a stabilizer when smelting.

And then ......

In addition to these words, Li Yuanjia is black-eyed.

How to melt these materials, what is the specific ratio of various materials, and what is the blowing method that should have appeared in this era, Han Wang, who wants to make glass, said that this should belong to the chemistry major or the engineering major? Anyway, it has nothing to do with the medical students, we are only responsible for using glass, and we don't know how to make it.

Fortunately, like papermaking, there were also glassmakers in these years.

Although there are very few, and the technology is much worse than that of the Persians, but after all, this is Chang'an City, after all, it is the center of the entire Tang Dynasty, so as long as you are willing to spend money and time, you can always find it.

As long as you can find someone, things will be easy.

When many people hear about glass or something, they always subconsciously think that it is a very modern thing, but in fact, this kind of gadget has appeared thousands of years ago. The Phoenicians were cooking on the beach, using a few pieces of natural soda as a stand, and then walking away and finding something shiny.

Whether in the West or in China, the history of glass manufacturing can be traced back to a long, long time BC.

It is the legendary glass-blowing technology, which appeared very early, but because of the war, one is that the speed of technological progress is very slow, and the other is easy to lose, so later after the Venetians improved the glass-making technology, they will make money and simply lock the workers on a small island, in order to avoid the outflow of technology......

However, no matter how complex the technology is, it is also the technology of thousands of years ago, and I am very confident in creating the glass Hanwang.

To put it bluntly, he has money and status!

If you want to learn the technology of making glass, and try to improve it, it is absolutely difficult for ordinary people in this world, because if you think about it, you will know that it must require full-time manpower and huge money to support it. And the nobles who have this ability are not interested in this kind of thing.

Wouldn't it be easier for them to buy it with money?

But Li Yuanjia is different, he has money and can afford the continuous investment of a "glass research laboratory"; He also has an identity, as long as he has the heart, he can naturally find a craftsman who can make glass; Of course, more importantly, he also has a "scientific research concept" that is beyond the times - the experience of a paper workshop, which can be directly applied.

Therefore, in Li Yuanjia's consciousness, it should not be difficult to make glass. If he could organize a team and have a guy like Wang Pu to lead it, just like improving papermaking and inventing movable type printing, he believed that it would not be long before he could make crystal clear glass!

However......

At this time, Li Yuanjia didn't know how big a big pit he would drag him into if he took it for granted, and then how many years he kept pitting him......

……

In the summer of the tenth year of Zhenguan, the death of Empress Changsun plunged the entire Chang'an City into silence.

Compared with the formal sense of the city full of sorrow and sorrow when the emperor died last year, although the battle was much smaller when the queen died this time, the ministers around the emperor knew very well that Li Shimin was really sad this time.

Several times when he was in the last court, Li Yuanjia could feel the emperor's trance.

He didn't know what to say about it.

From a man's point of view, Li Shimin's point is undoubtedly very admirable. Especially as an emperor, no matter how many beautiful women he has pampered, but his love for his eldest grandson is very strong and thick, which is really rare in Chinese history; But if you look at it from an emperor's point of view, Li Shimin neglected political affairs because of sadness, which is a bit unacceptable - at least Li Yuanjia couldn't get used to Li Shimin's indifferent attitude when he heard the officials report on the progress of the plague and the death toll!

Only this time, even Wei Zheng didn't dare to say anything.

After all, they are just some small people, and in the long river of Chinese history, the life and death of these people are often the most insignificant. It was only after coming to this era that Li Yuanjia understood that the so-called love for the people like a son is relative! For example, the great epidemic in Zhenguan for ten years, in the future, it is estimated that in the history books, it will be at most "diseases in Guannei and Hedong, and many people will die of diseases", and there are only a few strokes......

In the second half of the entire tenth year of Zhenguan, the court seemed to be in a very strange atmosphere.

However, in the ten years of Zhenguan, a lot of things still happened in the entire Datang, such as the rotation of the princes of the Tang Dynasty; For example, Li Shimin blamed his ministers, saying that officials above the third rank neglected the king of Wei, despised his son, and tried to make the imperial power go further; For example, there are 634 prefectures in the world, including 261 in the Guannai; For example, Sun Delun, a descendant of Confucius, was named the Marquis of Praise; Another example is to follow the emperor's wishes, Chu Suiliang, who was promoted to the position of counselor, suggested that the prince who should leave the cabinet stay in Beijing temporarily, opening the road to the third generation of the Tang Dynasty......

Following the original trajectory of history, Datang is still moving forward step by step.

Li Yuanjia, a little butterfly, seems to be unable to have any impact on this era at all - in addition to changing his own history and being left in Chang'an by Li Shimin, the coal stove and tables and chairs can only be used by high-ranking officials and nobles, and the thirteen incense is a luxury, and ordinary people can't see a penny!

The only important thing may be to let the Quyuan plough appear decades or more than a hundred years earlier.

And as a traverser, Li Yuanjia himself, he seems to have no opinion on this dull and boring life, after finding two glass craftsmen, included in the mansion, and built a small workshop for them, every day is to go to the court honestly in the morning, and after returning home, he writes books steadily, paying attention to the transformation of the palace and the technical improvement of the craftsmen, and then watching Li Zhong and others grow up day by day with satisfaction.

At the beginning of November, the eldest grandson was buried in Zhaoling.

In December, Murong Nuo, the king of Tuguhun Heyuan County, came to the court, Zhu Jubo and Gan Tang sent envoys to pay tribute, and Xiao Yu, one of the prime ministers of the Tang Dynasty, was the assassin of Qizhou.

In any case, Li Yuanjia finally ushered in his first New Year's Day meeting after returning to Chang'an.

This is the most annual and solemn pilgrimage.

This also means that the ten years of Zhenguan have become a thing of the past, and the eleventh year of Zhenguan has arrived quietly......