"By the way, there's one more thing." Li Ke suddenly remembered one more thing.

"What?" Li Shimin frowned.

"You must not learn from those emperors and the like to eat elixirs." Li Ke rolled his eyes, he hurt when he thought of this, you said that anyone who can become an emperor is not stupid, and in the end they all run to eat that kind of thing.

"What's wrong? Quite a few people eat it. Li Shimin was a little puzzled.

"You didn't eat it, did you?" Li Ke became nervous, Li Shimin led troops to fight when he was young, and his body can be said to be powerful, but he is definitely not a long-lived person, although Li Shimin's death has something to do with his mental blow.

In addition to the early death of his beloved Empress Changsun, first several princesses such as Changle and Jinyang died early, and he has all experienced white-haired people sending black-haired people, and it is normal for his spirit to be hit.

But it definitely has a lot to do with him eating the so-called elixir.

"Well, I tasted it once, and it didn't feel like it had any effect." Li Shimin didn't hide it.

"That thing is poisonous." Li Ke is very straightforward.

"Poisonous?" Li Shimin's face changed in an instant, and Chang Lin's face also changed.

"I also found it by accident, Dad, you know that mercury is added to their alchemy." Li Ke said directly, these emperors don't know what the materials of the elixir are, Li Ke doesn't believe it, they eat the elixir in order to survive, whether it is Qin Shihuang or Li Shimin, what materials do the alchemists put in, how can they not ask?

"Yes, but only a little." Li Shimin frowned and nodded.

"You know that my mercury mirror is going to use mercury, so I also accidentally discovered that mercury is poisonous, although it does not have much effect on the human body when it is in small amounts, but it cannot be excreted by the human body, and when it accumulates to a certain extent, it will have a fatal effect on the human body." Li Ke said seriously.

"If you don't believe me, you might as well find a little bit of mercury and give it to a condemned prisoner, and you'll know." Li Ke picked up the cup from the table and poured a little water into it, about three or four milliliters of water, which was actually very little, at least in the visual range of people.

"That's it?" Li Shimin looked at the water inside and found that there was only a little bit.

"Yes." Li Ke nodded.

"Chang Lin remembers." Li Shimin admonished, Chang Lin immediately came over and looked at the cup, then poured the water in his hand and looked at it before nodding.

"If you just ate one, you'll be fine. In fact, those Taoist people who make alchemy don't know whether these things are poisonous or not, and if it's just a little bit, the human body has no effect, so they can't detect it, and by the time they feel the harm, it's already too late. Li Ke explained to those Taoist priests to some extent.

Li Shimin is not the kind of person who implicates others at will.

"I see." Li Shimin was noncommittal.

"Third brother, is Aya really okay?" Changle was a little worried.

"It's okay, don't worry, it's a hooligan to talk about toxicity regardless of the dose, just like arsenic is a highly toxic thing, but it is a truth that it can also be used in medicine, like a century-old ginseng, if you eat too much, it will also lead to excessive supplementation and death. The same goes for mercury, a little dose doesn't matter as long as it's not ingested. Li Ke appeased Changle and the others.

Hearing Li Ke say this, Changle and them were much more relieved, and Li Shimin didn't take it to heart.

appeased Lao Li, this next outing is much more interesting, Li Ke even took Li Shimin to experience what a skewer is all about, don't say that Li Shimin is not exclusive, he has never done such a thing, although Li Shimin has led troops to fight, but he is also from a gate valve, these things are naturally not his turn to do it.

Chang Lin was also a little dumbfounded, he didn't expect Li Shimin to be willing to do these things, but looking around, except that Li Shimin is his son, and Chang Lin has indeed not seen Li Shimin like this for a long time.

It wasn't until almost evening that everyone packed up their things and went back, Li Shimin wanted to go back to the city directly, and Li Ke and they naturally went back to Shuwangzhuang.

"By the way, you mentioned papermaking and printing earlier, and you improved it?" Li Shimin looked at Li Ke and asked.

"Well, it's been done, I have already started to build a paper mill, and I have started to buy some materials from around Chang'an, and the printing process is actually very simple, so the printing of books in large quantities can be implemented soon, and it can start in the second half of this year." Li Ke thought for a while and said.

"Good job, these technologies are related to Datang's national policy, what reward do you want?" Li Shimin looked at him and asked.

"Can you give me some knighthood?" Li Ke said.

"What do you mean?" Li Shimin was a little confused.

"A few honorary titles are all that you need, without any real power, and I want to reward them to the craftsmen who have perfected these techniques." Li Ke said.

Li Shimin frowned, this matter is not easy to do. It's not that he cares about these titles, because once this opening is opened, it means that the biggest cake of the noble class has been touched.

"It's a bit difficult, you should know why, I need to think about it." Li Shimin thought for a while.

Li Ke muttered: "It's not me saying you, dad, what do you mean by being the emperor?" ”

Glancing at Li Ke, Li Shimin was rarely not angry, but said, "Then what do you say the emperor should do?" ”

"Of course, it's whatever you want, you can do whatever I want, and what do you think about so much?" Li Ke said irresponsibly, he knew that this was a fart, but he said it on purpose.

"Come on, come on, you give me an idea, how can I do it like you." Li Shimin was laughed at angrily.

"How simple it is, you issue a decree, if you don't agree, you will be killed, if one person can't do it, the whole family, and if the whole family can't do it, the three clans." Li Ke said lightly.

"Get out! That's the way for you? According to your killing method, how many ministers are there in the court? Within a month, Datang collapsed. Li Shimin scolded.

"Dad, in fact, if you maintain all the people in the world and maintain this basic plate, Datang will not collapse." Li Ke smiled.

Li Shimin paused, and then waved his hand: "Get out, say something human." ”

"Then it's okay if you don't give me a title, but then I will one day get rid of these properties, and if you want to take them under the ownership of the imperial court, then you have to give me a title." Li Ke said.

"What do I want your stuff for?" Li Shimin glanced at Li Ke a little strangely.

"You don't want anything, but if the ministers of the court ask you to ask me for something, can you still refuse?" Li Ke pouted, he had already seen through Li Shimin.

"Okay! Remember your words, if you really have the ability to let the ministers of the court let me ask you for your things, what if I give you a title! I have a knighthood, and you will reward these craftsmen! Unlimited! Li Shimin was laughed at by Li Ke, Lao Tzu doesn't even want important livelihood resources such as iron ore and salt, can he still grab things from you? You're underestimating Lao Tzu too much.

"A gentleman's word, the horse is difficult to chase." Li Ke stretched out his hand.

Li Shimin was stunned for a moment, he felt that something was wrong, but he still directly reached out and slapped his hands with Li Ke.

"Hehe, by the way, Dad, who sent me those readers? Is it still the acting Guogong? Li Ke asked.

"Sometimes Lao Tzu wants to kick you to death, but the court doesn't care about such a big thing? Last winter, the Tang Dynasty used troops against Tuyuhun, and Li Jing was the leading general, because the timing of the Chinese New Year and the weather was not right, he did not move troops for the time being, so he rushed back. After sending you the soldiers, he has already set off for Tuyuhun again, and he will inevitably be on top of Tuyuhun this year. Li Shimin said with an arrogant face.

Didn't you say before that Lao Tzu didn't dare to do anything to Tuyuhun? Look at whether Lao Tzu dares or not!

"Oh." Li Ke didn't react.

Li Shimin: "......"

After talking about these things, the two sides were basically separated, and when they walked out of a distance, Li Shimin, who was riding on a horse, turned his head to look at Li Ke and the others who had not yet started their return journey, and he couldn't help asking: "Chang Lin, have I been taken care of?" ”