When he asked the Taoist elders to study the alkali, Yang Heng was not idle, he asked the housekeeper to arrange for someone to collect some natural eucommia bark, leaves, and fruits.

According to his understanding, if it is true, there should be some gelatinous white silk in these things, if not, then it may not be this kind of eucommia, and it is necessary to arrange someone to find it separately, and in that case, the workload will be large.

Eucommia ulmoides, whether in Yang Heng's previous life or at this time, are some relatively valuable trees, and they are also precious medicinal materials, but fortunately, Yang Heng knows that the location of Eucommia ulmoides is produced in Qinling, not far away, and there are a large number of productions, if so, he can arrange someone to collect it, and he can even find Li Er to buy a part of the forest.

"Xiao Langjun, I'm back, I'll find the Eucommia you want." Yang Heng was a little puzzled, you came back so soon, and the eucommia you were looking for was in this small cloth bag in front of you.

"What is this?" "Xiao Langjun, this is Du Zhong that I bought from several pharmacies, I'm afraid of delaying Xiao Langjun's matter, so I bought such a little first, and if I can, I'll collect it."

"Don't look at it, this is not the eucommia I want, these are all concocted, what I need is the leaves, fruits, and bark of the natural eucommia tree, these things can be found now, I heard that there are in Qinling, I'm not in a hurry, you go to find it."

Yang Heng was really a little crying and laughing, where did the housekeeper find such a living treasure, and he actually bought it from the pharmacy at a high price, didn't he know that there was it in the Ludao Pharmacy, but the eucommia in the pharmacy was all processed by traditional Chinese medicine. It's already a good herb.

While the people are looking for the eucommia tree. Yang Heng also happened to clean up the understanding of eucommia gum in his mind. The best extraction method of eucommia gum is the mixing method, but now Yang Heng can't meet this condition here, and he can't tell those Taoist masters some chemical molecular formulas, not that he doesn't want to tell, but that it is useless to tell them, besides, Yang Heng himself doesn't remember what molecular formulas, think about it carefully. But it's just what kind of sourness, by the way, the microscope, since the telescope has been small, you can let these Taoist leaders continue to study the microscope, if there is a microscope, not only can they study chemistry to use, but also Sun Daochang can also observe some human tissues, as well as some bacteria or something, okay. Write it down, and their next research direction is microscopy. Also, I want to find Yuan Tiangang and ask him to find some Taoist masters who are good at playing some tricks as soon as possible, no matter what tricks they play, this proves that the speed of their hands will definitely be very fast, and it is naturally suitable for research.

What methods can be used to restrain these people, as well as the five Dao Masters in the mountains, Yang Heng thinks about this matter, thinks about it and thinks about it, but this is normal, these people really make him embarrassed, how to give them a place and let them stay here with all their hearts?

Otherwise, just do a big thing, that is, to support the Taoist, to know that the Tao is now supporting the Taoist, but it is the most advantageous, because Li Er thinks that Lao Tzu is his ancestor, if you say that there is another classification in the academy, the classification of the Taoist will also become, not bad, I am really a genius, write it down, I can't take care of these now, the goal now is Eucommia gum, because this thing is very useful, whether it is a water pipe, or a bicycle that Yang Heng intends to develop, it needs to have rubber, But where is the rubber he still doesn't know, that is, the rubber tree in front of him will not know, and there is the processing method of rubber that is even more difficult for him, this, he has not been exposed to in the previous life, or eucommia gum is more realistic, although there are also difficulties, but the difficulty is much smaller, but it is just a difference between hard rubber and soft rubber, if you can make hard rubber, it is not bad, it is much more useful to use hard rubber to make transmission pipelines, so that his family layout is a step forward, And it will also become popular in the homes of various ministers in Chang'an, what is he thinking, it is naturally tap water, if there is a water pipe made of eucommia gum, Yang Heng will naturally do it first to make tap water, and it is really inconvenient to have no tap water here.

But there is still a problem, by the way, it is oxidation, there must be an anti-waterlogging agent, but what is the anti-aging agent, forget it, don't think about it, anyway, it is something like amine, let the Taoist elders slowly try it.

Just thinking about such a little thing, he hasn't even written a full page, but let Yang Heng retreat for a long time, "Xiao Langjun, Xiao Langjun, are you there?" "Well, it's time to get out and breathe, just to see who's calling him outside.

"Xiao Langjun, I'm back, this time I personally ripped it off the tree, there are seeds, leaves, and bark, by the way, how is this bark different from other bark, there are some white silks in it, but not the silks in those ordinary barks." Ah, yes, that's it, I didn't expect such a thing to be discovered by this subordinate, it seems that the housekeeper asked him to find it with his intentions, this subordinate can be used, maybe he can be responsible for one thing at that time.

"What you said is true, then you don't need to look at it, you ask the housekeeper to arrange for someone to send you to the mountain, and I will go right away." Yang Heng didn't want to carry a load of bark and leaves into the mountain by himself, besides, he didn't know how many Lu Dao there were, "Xiao Langjun, are you sending them all in, I brought back a carriage, I heard that this is a precious medicinal material, we can leave some for medicine." ”

"A carriage, there are a few less, but for the time being, you go and tell the housekeeper, where that place is, see if there is a master, if it is a place without an owner, we can pay for it." "But Xiao Langjun, it's in the mountains, if there is no master, there must be no master, but it is a little difficult to go in and pick, but there are a lot of eucommia trees in it, if you make medicine, it is enough for the entire Tang Dynasty to use for a few years." "That, you, why don't you leave the medicine every word." Yang Heng couldn't laugh or cry a little, what does this have to do with making medicine, and he is not selling medicine.

"That, Xiao Langjun, the medicinal herbs in front of me were bought with my own money." He said a little embarrassed, "Okay, okay, you go and ask the housekeeper for money, although you haven't done anything before, but you're also doing things for me, aren't you?" "Understood, why he didn't leave the medicinal herbs every word.

"Xie Lu Xie Xiaolangjun, Xie Lu Xie Xiaolangjun, then I'll go." This subordinate ran away, and the money in front of him was not thrown into the water, and he finally took it back, which can be regarded as a sigh of relief.

"Well, you really, if you understood, there wouldn't have been so many things!" Yang Heng shook his head helplessly, it seems that this person still can't be used temporarily, he is too careless, Yang Heng believes that the housekeeper will tell him to understand, but he still heard it wrong, and went to the pharmacy to buy eucommia.

"Owner, this can't be done, you can't get the soda ash you want, you look at this, it's just not very pure." When Yang Heng entered the mountain again, the two Taoist leaders were bitter, why, this is really a problem, the way they use is only to dissolve crystallization, or screening, it is naturally difficult to make soda ash, however, Yang Heng is not in a hurry, this is a very difficult thing, it would be good if he could mention it slightly, but Yang Heng will mention it, he will not, so let these Taoist leaders slowly test it, however, Yang Heng still gave them a point.

"You can try how lime and salt can be combined, you can also add some other things, by the way, you can make some glass tubes out, you can study slowly, by the way, these things you can see if you can use not very pure alkaline water to extract the gum inside, I can use." Yang Heng said lightly.

"Ah, by the way, you'd better be prepared when you test these things, even the gases they produce can only be sniffed with your hands, otherwise you will be injured or poisoned, but it will be a big deal."

Although science can't be sloppy, it also starts from sloppiness, and if it doesn't start, what will it be? (To be continued......)