Fang Xuanling's subtle feeling was actually correct, because the salt drying and sea salt purification technology of the Han Wangfu was indeed not as simple as the emperor imagined, because in the future, once the technology matured, the output of seawater salt drying far exceeded their imagination! And if Ma Liang and their successful purification technology can also be popularized on a large scale......

To be honest, Li Yuanjia feels that the history of China's salt industry should be rewritten.

So after receiving the "family letter" written by the emperor to himself, Li Yuanjia was also confused and stunned in his study for a long time.

What's the situation?

What's going on?

Could it be said; Someone dropped the letter he wrote to the emperor and wanted to frame himself?

However, after taking a closer look at the content of the letter, he found that although the content was not much, the handwriting was obviously the second child's flying white body, Li Yuanjia put away this feeling of persecution, and finally confirmed one thing - His Majesty the Emperor of the Tang Dynasty didn't seem to attach much importance to seawater salt, and didn't even ask too much about the coarse salt purification technology, but just wrote a sentence of "I know" lightly, but he was very concerned about the tea sold to the north by the Han Wangfu, and asked a lot of questions related to the Turkic merchant Bahari... …

In other words, that's the end of the sea salt?

Looking at the emperor's reply over and over again, Li Yuanjia was stunned for a long time, and finally his eyes jumped, and his brows furrowed: "No! Definitely not! Could it be ...... I didn't make it clear in the letter I wrote to my second child? That's right...... How did I write that? ”

Scratching his head, Li Yuanjia began to try to recall the content of the letter he gave to the second child.

The emperor's reaction was too unexpected, so there was only one reason why Li Yuanjia could think of it, that is, he did not express it clearly in the letter, which made Li Shimin misunderstand the awesomeness of seawater drying salt and ignore the importance of purification technology!

So......

"Sizzle...... Because what I'm saying is too vague? ”

After carefully recalling for a long time, Li Yuanjia finally recalled what he wrote in the letter, and then couldn't help but gasp, and the root of his teeth instantly hurt a little!

The letter written by Li Yuanjia is indeed a bit vague when I think about it now.

The reason is simple, there are many things that he is not very clear.

For example, although the method of drying salt in seawater was provided by Li Yuanjia, he only provided some principles that he had learned scattered in his previous life, the most important of which was even from "A Bite of China". So fundamentally speaking, seawater salt drying is still a little bit explored by the five salt workers, so Li Yuanjia is not very clear about the specific efficiency and output, and everything can only be roughly inferred according to the narrative of a salt worker.

So when he wrote the letter, Li Yuanjia naturally didn't dare to say too much.

When he talks to Han Lucheng or Ma Liang, it doesn't matter if he brags big, but if he brags to the emperor, wouldn't it be embarrassing if he can't reach it at that time? And it's a trivial matter to be embarrassed, if you give someone a hat of a bully......

Anyway, as long as he thought about it, Li Yuanjia couldn't help but shudder.

As for the coarse salt purification technology, he said it more objectively, but because it was too objective, Li Yuanjia truthfully described the cost of purifying a pound of sea salt!

In ancient times, the cost of purifying sea salt naturally could not be low.

Not to mention that Ma Liang tried to find the best thing from Tongbai County, which needed to be transported thousands of miles away, just to dissolve the sodium carbonate and then interact with the sea salt solution, it would take several repetitions...... If it weren't for Li Yuanjia's personal guidance, would Ma Liang and those students be able to do it?

This is still the elite of the Han Palace, not only can read and write, but also learn mathematics and Arabic numerals, in this era can definitely be regarded as the type of scientific research elite!

What would happen if you were an ordinary craftsman?

It is precisely because of this thought that when writing a letter to the emperor, Li Yuanjia deliberately emphasized the technology and cost required to purify coarse salt, just because he was afraid that the emperor would think of something wrong, and when the time comes, he will let himself purify as much sea salt as he wants to purify every year, which will be miserable.

And after pondering for a long time, Li Yuanjia licked his lips and thought to himself: "Is it because what he said was too vague that the second child misunderstood?" ”

The more he thought about it, the more Li Yuanjia felt that it made sense.

After all, according to the contents of the letters he now recalled, the drying of salt in seawater was only a new method, and did not show any superiority in boiling it; As for purification technology, because Li Yuanjia deliberately emphasized the cost and difficulty, compared with the refined salt on the market now, there seems to be no advantage?

"Uh......"

Thinking about it, Li Yuanjia's face became strange.

It seems to be ......

What was written in the letter was too realistic, so that the emperor felt that it was not interesting?

After turning around the study several times, Li Yuanjia finally stopped and couldn't help but smile bitterly. It's just that even if this speculation is true, he can't think about it for a while, after all, everything in the letter is true.

At least in a short period of time, it is difficult to improve the efficiency of seawater salt, and it is difficult to reduce the cost of coarse salt purification.

In both cases, it will take time to refine and improve the technology.

Just like the paper and glass workshops, Li Yuanjia needs to give them enough time, keep enough patience, and then wait for the people under him to surprise him.

"Yes, that's the only way to do it first!"

After pondering for a while, Li Yuanjia breathed a sigh of relief, shook his head and made up his mind: "Since the second child doesn't look down on seawater salt drying technology now, let's do it ourselves first...... Well, with this letter anyway, it's like having a talisman, at least there's no problem doing it! ”

After making a decision, Li Yuanjia's mood suddenly relaxed.

Naturally, attention shifted to tea - the emperor's interest in tea was slightly unexpected by Li Yuan's love.

After all, the purchase volume of Bahari is only 2,000 catties.

So after carefully studying the emperor's reply, Li Yuanjia slowly figured it out.

Li Shimin's opinion is very simple, that is, to encourage the Han Wangfu to continue to do business with Turkic merchants, and also to expand its own customer base, find some Goryeo merchants, Tibetan merchants or something, and then sell some tea to go out and try it.

"Looks like it's tempting!"

After pondering it a few times, Li Yuanjia gently rubbed his chin that had just come out with a stubble of fluff, and a smile soon appeared in the corner of his eyes: "This kind of thing is definitely not in a hurry, but the tea trade that originally started from the people is now not only controlled by a prince to control the organized development, but even has the emperor's recognition and support, it seems that the foreign tea trade should be a sure thing to appear on the historical stage in advance......