When Li Er was angry, and even when Li Er was feeling embarrassed, Yang Heng didn't know that he was causing trouble again, but went to deal with another matter.

What's the matter, it's a matter that was brought about by the name of the medical edict who came last time, that is, about the eucommia tree.

"You three, come here, let's talk about your research experience first." Once again, Yang Heng felt that he was lacking in manpower, and he had been using these five Taoist priests to study chemistry, but he had no way to find other people, or should he continue to fool Yuan Tiangang and ask him to find some Taoist priests to help here.

What Yang Heng didn't know was that Li Er originally sent someone to call him into the palace to see how to deal with the matter about Qixi Festival, but when his people came here, they found that Yang Heng had already entered the mountain, and there were also Li Er's people waiting at the mountain pass, and when the people arranged by Li Er arrived, they were blocked outside.

"Do you know the way, this is an order from His Majesty, and he told me that I had to bring the horse back." The person who came said very angrily, "Come on, I don't know you yet, the person who always holds chicken feathers as an arrow, or you can take out the handwriting of Your Majesty, or the holy decree, so I will go in and report, otherwise, you should go back, there is an edict from Your Majesty here, but this is what you provoked, you go back now, you are not allowed to talk to anyone along the way, that is, you are not allowed to talk to anyone, and you are not allowed to talk to yourself, after you go back, Your Majesty will explain to you, otherwise Your Majesty will say, Whoever enters there must be no forgiveness. ”

"I don't believe it. How did someone go in just now? You didn't bother to ask, did you? "I'm sorry. I can't comment on that, and I'll tell you again, if you continue to ramble here, then I don't care if you're a person close to Your Majesty. ”

"You, you, you wait for me, I, I'll be back." The people who came ran out of the city in a bit of a daze. "Remember, you are not allowed to say a word from now on, and I will forgive you for the few words just now." "You, ah." He was about to retort when he heard an arrow fly past his ear, "This is a warning to you, if you keep opening your mouth, then the next arrow will come out of nowhere, and it must be your throat." ”

The word "ah" almost came out of his throat, and then he covered his mouth with his hand. Because he already felt the murderous aura, it seemed that someone was really watching him from the sidelines. If this sound comes out, then I really don't know if he will leave alive.

He suddenly remembered that this person was a celebrity around His Majesty, but he had disappeared in the past few years, and it seemed that he had hidden here to perform an important mission.

He guessed well, here is the person Yang Heng took the initiative to ask Li Er to arrange, just to be responsible for some people who are difficult to deal with, and other people, such as ordinary people, and some foreign envoys, do not need him to come out to deal with it in person, this Yang Heng's people will deal with it, and how can he judge these people, sometimes it is people he knows, without Yang Heng's leadership, sometimes Sun Simiao comes alone, these people don't need him to take care of them, but other people, he thinks that Yang Heng's people can't deal with him, he will come forward, There are also some people who are messing around with Yang Heng's people, he doesn't even need to come out and will solve it directly, most of the time he will still ask, if it is Li Er's person, then he will let him go back, and behind this person there will naturally be someone to follow, these are all people in the dark, if he gives a signal, maybe this person will die halfway, Li Er gave him a death order, here except for Yang Heng and the people designated by Yang Heng are not allowed to enter or leave, otherwise they will be killed. This is also the reason why Yang Heng is quite relieved about the safety here, and it is also the reason why Li Er has increased the weight of Yang Heng, because some of the research experiments in it will let these people report it, if Yang Heng doesn't say it, Li Er won't ask, and he won't even mention it, and these things are all related to the technique, unless there is a mysterious thing, this will let Yang Heng explain, but so far, there has been no mysterious thing in it, that is, the lightning strike, lightning rod, and it has not made these people feel that it is a mysterious thing, They didn't know that the thunder was drawn down by a lightning rod. Otherwise, they would report it, and Li Er would definitely ask Yang Heng about it.

Therefore, Yang Heng entered the mountain in a timely manner this time, so that he escaped a catastrophe.

"What, are you saying that the people around me are guarding there with a warrant, just not letting you in, if you force in, they will kill you directly." Li Er was also a little puzzled, "Your Majesty, you seem to have sent such a person." "There has been nothing to report in the past few years, and Li Er has forgotten some of the things here, which has been reminded by the eldest grandson, "You go down, remember, don't tell what you saw," "Your Majesty, the slave went down first." "Okay, this is actually a eunuch, no wonder that person is still a little taboo about him, "Do you think I should kill him?" Li Er asked behind him again, "Your Majesty, I'll do this." "It seems that this eunuch really knows what he shouldn't know, and he died so little.

"Come down, you see what I've dealt with, go back and say hello, if there is such a person in the future, let him be killed directly, there is no shortage of people around me." How could this person be so bold and dare to spy on Li Er's side, in fact, this is also Li Er's cronies, he actually greeted the people around Li Er when he came, he just wanted to see if people would tell the truth, and it was naturally Li Er's business to deal with it, although it was said that they would deal with it directly, but they still wouldn't deal with it themselves, it was better to let Li Er deal with it.

"Xiao Qingfeng stays, Da Qingfeng, Da Mingyue, you two come with me, I have other things to hand over to you, and you are responsible for Xiao Qingfeng here." Why are there only three Dao Masters now, it turns out that two of them are studying gunpowder, and they haven't appeared in front of Yang Heng for a long time, it seems that they have already gained something, so they have been stuffy there to do research.

"The task of the two of you is to prepare a lot of soda ash first, what is soda ash, don't ask me, I don't understand very well, you have studied it yourself, and after you have researched it and created a large amount of soda ash, let people pass it on to me, I will assign you tasks again, do you know the way?" "Zhilu has told the owner, but where should we go to study it?" "Where is it, this is a problem, you must know that this soda ash will have a great impact on the land, by the way, there is a stone pit over there, it will not leak, and the wastewater you cause will be put into it, I will arrange someone to deal with it, or there are other uses."

Because there is a rather beautiful environment outside the mountain, and there is a academy, Yang Heng naturally does not want to let some wastewater flow out to affect the environment, but if there is some peculiar smell in the air, the impact is not very large, after all, the output of these things is very low, it is easy to deal with, at this time, if you develop some things, you can directly sell them at a high price, because the things developed by Yang Heng have no substitutes, so it is certain to sell at a high price, and naturally the cost of decontamination will be included in it. When these things are really mature, Yang Heng can even encourage Li Er or the next emperor to introduce an environmental protection law, so that Yang Heng will not become a sinner.

The reason for the manufacture and research of soda ash is naturally used to extract eucommia gum, you must know that Yang Heng had a period of time in his previous life to consider how to make a fortune, but he consulted a lot of information, that is, in this access to information, he knew the existence of Eucommia ulmoides gum, and he also knew that Eucommia ulmoides gum is extracted with lye, naturally how to extract it, that is not what he cares about, you must know that these Taoist priests have their pride, once they know how beneficial this thing is, Even if they go one step closer to the immortals, they will use a lot of energy to test it. (To be continued......)