Datang: Acting as a celestial mystery at the beginning

Li Yi'an didn't seem to hear what Fu Ling said again, and he was thinking about the generator.

Seeing his absent-minded appearance, Fu Ling didn't say any more, kept her thoughts in her heart, and soon returned home, where the servants had already prepared dinner.

After the meal, Li Yi'an was going to accompany Li Changge and the others. Fuling opened her mouth and wanted to say something, but finally gave up, thinking that it was nothing important.

By the next morning.

Li Yi'an went directly to the East Palace, and brought his blueprints to find Li Chengqian.

"Sir, are you saying that if you build this thing, you won't need candles and oil lamps for lighting in the future, and you won't be afraid that there will be no light at night."

Li Chengqian became excited when he heard it, and felt that the thing on the blueprint was feasible: "Is that thing called electricity really so magical?"

Li Yi'an said: "The benefits of electricity are far more than these. If it can be used properly, it can create many things, and even change the entire Tang Dynasty."

Li Chengqian quickly said: "Let's build it quickly, what are we waiting for?"

"It's not difficult to do it. The difficulty is that I don't have enough materials. First of all, I need a lot of copper. Can Your Highness provide this?"

"It should be possible to melt our copper coins, right?"

"The reduction in the amount of copper coins on the market will cause economic turmoil, not to mention that Your Highness dares to melt the money from the treasury?"

Of course Li Chengqian didn't dare. If he really did this, Li Shimin might melt him down too.

But other than this, he couldn't think of any other way.

Li Yi'an said again: "Although copper coins cannot be used, we can dig a new copper mine."

Li Chengqian clapped his hands and said, "Mr. is still thoughtful, but where can I find new copper mines?"

"Don't be too troublesome. I know the whereabouts of a copper mine, but it will be a little troublesome to dig it out. That place has been awarded by His Majesty."

This is why Li Yi'an came to him today, to get a copper mine.

"Where is it? Who is the reward given to? I'll go and ask him right now."

As soon as Li Chengqian heard that it was possible, he wished he could dig it right away.

Isn't it just a mine, as long as he wants to get it, the rewarded person will not fail to take it out.

"The north side of the Qinling Mountains is currently in the hands of King Yue!"

As soon as Li Yi'an finished speaking, Li Chengqian exclaimed.

He could have gotten it from anyone else, but it was a bit difficult if it fell into Li Tai's hands.

He couldn't beg Li Tai to give it to him.

Li Yi'an continued: "If I open my mouth, the King of Yue will definitely give it to me. I don't want to meet the King of Yue in private, let alone owe him anything, so I came to discuss with His Highness. Can His Highness talk to the King of Yue and give it to us?"

Although Li Tai is his student now, he has never taught Li Tai anything. During this period of time, he has been leaving him alone.

Coupled with Li Chengqian's reasons, it is not convenient for Li Yi'an to go to Li Tai to ask for mines.

Li Chengqian didn't want to beg Li Tai, so he asked, "Sir, can we find another copper mine?"

"Yes, but I don't know when we will find it. Even if there is, it will be far away from Chang'an. Only Qinling is the most suitable for us to mine."

According to the information of later generations, Li Yi'an remembered that there was a copper mine on the north side of the Qinling Mountains, near Chang'an.

It is also accidentally discovered that the copper mine is Li Tai's fiefdom.

For other places, he didn't know where to look.

Li Chengqian scratched his head and said: "Sir, let me think about how to get that place, sir can guarantee that it will be successful?"

"It will definitely succeed!"

Li Yi'an said with certainty.

"Sir, come to me tomorrow, and this time I will go all out."

Li Chengqian seemed to have figured out something, and said with certainty.

In this case, Li Yi'an said goodbye to him, and left the East Palace first, lest Du Zhengxuan and the others come back and have all kinds of yin and yang.

It's just that just after leaving the East Palace, Li Yi'an and Li Tai ran into each other head-on.

"Sir, I have been waiting for you for a long time, and I finally entered the palace."

Li Tai said hastily: "Sir, you have been waiting for so long, don't know when you can teach me some knowledge?"

Li Yi'an thought for a while, and felt that Li Tai came at a good time. He didn't know how to make Li Tai retreat, so he took the opportunity to come to his door and said with a smile: "If King Yue is free now, you can come with me, but It might be a bit bitter, but I don't know if King Yue can bear it."

Li Tai patted his heart and said, "I'm not afraid of hardships, and I'll obey my master's orders."

"Go, let's go out of the palace!"

Li Yi'an took him away, and brought Cheng Chumo and others along with him, and brought dozens of their servants with him.

After they assembled, they went directly to the woods outside the city.

"Sir, what are we going to do?"

Li Dejian asked.

"I'm going to collect rosin."

Li Yi'an said.

"What is this?"

Li Tai asked curiously.

None of them knew what rosin was, or even heard it for the first time.

Li Yi'an wanted rosin, which in simple terms is resin, used to make plastics.

Resin includes rosin, amber, etc., and is an important raw material for making plastics. However, most of the plastic products of later generations are made of synthetic resins, but the conditions here are limited and it is impossible to manufacture them.

In addition to using resin, plastic also needs plasticizers, stabilizers and other things, and there is no way to get them now, but he first got rosin, and then made other chemical raw materials later.

Hearing Li Tai's question, Li Yi'an simply explained: "It's a very useful thing."

Unknowingly, they came to the edge of the forest, looked up and saw that the place was full of pine trees, and the conditions were enough for them.

"Go up the mountain!"

Li Yi'an said.

From the foot of the mountain to the middle of the mountain, Li Yi'an looked at a few pine trees with lush pine needles, and asked them to stop when they met his conditions.

Li Tai, a little fat man, has long been exhausted and out of breath. He ate and drank delicious food in the palace. He has never experienced such bitterness before, and he exercised too much. Just do it."

He persevered, and did not retreat in spite of the difficulties.

"Some things, I think it's better to do it yourself."

Li Yi'an said: "It seems that the King of Yue is already tired. Someone will send the King of Yue back to the palace."

Li Tai said quickly: "No, I'm not tired yet, I'll go wherever my husband goes."

It was hard for him to go out with his husband. Li Tai didn't want to go back without gaining some good impressions and learning knowledge.

Recalling that the prince had always been by his husband's side in the past, in order to learn so many things and accumulate a lot of political capital, Li Tai felt that he should not give up.

Cheng Chumo looked at the pine tree and asked, "What do you want to do next, sir?"

Li Yi'an ignored Li Tai, stretched out his hand to touch a pine tree, and said, "Let me demonstrate once, you follow my method and fix all the tools in your hands to the tree."

After that, he peeled off a layer of pine bark, and then used the blade to make a series of cuts on it.

After a while, the layer of bark that was peeled off showed a groove that was wide at the top and narrow at the bottom. Li Yian fixed a container made of bamboo tubes at the bottom of the groove to hold the flowing rosin. .