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"Here we are."

Wang Guan and the others got out of the car in turn, looked at Professor Liu's residence casually, and then slowly walked into the building and came to the living room on the second floor.

Compared with Uncle Jin's residence, the decoration of Professor Liu's home is obviously more tasteful. The snow-white walls, hanging several calligraphy and painting works, coupled with elegant wooden furniture, and evergreen trees placed in the corners, are quite elegant and antique.

"Everyone is welcome to come and visit."

At this time, Professor Liu smiled and said, "Sit casually, don't be restrained." ”

Say hello and boil water to make tea. After a few minutes of busy work and pouring a cup of tea for everyone, it was considered to stop. However, Qin Yue didn't forget the purpose of coming here, took a sip of tea soup at will, and immediately got straight to the point: "Professor Liu, is the Luan gum formula you said true or false?" ”

"Why, I'm still skeptical." Professor Liu chuckled and said, "I can show it to you for verification, but it's ......."

"But nothing."

Yu Feibai simply asked, "What conditions do you have?" Or how much does it cost, you can directly quote the number. ”

"Don't talk about money, it's too vulgar to talk about money." Professor Liu waved his hand and said with a smile: "Actually, it's not a condition, it's just a proposal." ”

"You don't have to sell it." Yu Feibai pouted and said, "If you have any proposals, just say it, we can consider it." ”

That's right, it's consideration. On the way over, they had already discussed it, and they couldn't be too eager. Otherwise, Professor Liu may have no fear, and he will think about it every inch.

"It's just a small proposal."

At the same time, Professor Liu's words suddenly changed: "By the way, I didn't tell you, in fact, I study botany and am very interested in plants. Not only the roots, branches, stems, and leaves of plants, but also the gum ...... of plants."

"The fox's tail is finally revealed."

At this moment, Wang Guan and the others glanced at each other, and their faces were full of understanding. It seems that their judgment was correct, and Professor Liu's target was indeed the contents of the box.

"Wise people don't speak secret words."

It would be much easier to determine Professor Liu's goal, Yu Feibai smiled, his attitude eased, and his tone was no longer hard, but a little like a spring breeze: "We understand what Professor Liu means." Do you want this box? ”

Professor Liu smiled and didn't say anything, but asked: "Actually, Luan glue, to put it bluntly, is a kind of animal glue, and its adhesion may not be stronger than that of modern chemical glue, I don't know what you are going to do?" ”

Everyone is a smart person, and of course they understand that Professor Liu's rhetorical question is not only curious, but also a tactful rebuttal.

Just as it was impossible for Wang Guan and others to tell Professor Liu why they needed Luan glue, it was impossible for Professor Liu to tell them the details of the substances in the box. Plainly. It's still a matter of trust. If you don't trust each other, you will naturally test each other.

"Well, now that the skylight has been opened, there is no need to cover it up any longer." This time. Wang Guan said: "Actually, we don't have to know what this box of things is and what kind of value it has. ”

"That's right, our purpose is clear. It is to be the formula of Luan gum, or Luan gum. Yu Feibai echoed: "You said that there is a formula for Luan Jiao, then you give us the formula." How about we give this to you, fair trade? ”

"Yes." Professor Liu smiled and said, "Actually, this is what I want to say. ”

"Of course, the premise of everything is that the formula is useful, and it is a real Luan gum formula......"

However, Wang Guan was very cautious: "Professor Liu, it's not that we don't believe you. Instead, the contents of the box are here, visible and touchable, without any false moisture. However, it is not easy to distinguish the authenticity of the formula. ”

"That's right." Yu Feibai thought so: "You said yes, we believe it now, but we can't make Luan glue according to the recipe, wouldn't it be a loss." If you've ever made a real thing yourself according to the recipe, that's different. ”

"I only have the formula, but I have never refined Luan gum. Otherwise, I will give you the real thing directly, but since I am sure that it is the Luan glue formula, I must be sure. Professor Liu said seriously: "And I also want to state in advance that the formula is right, but whether you can refine Luan gum according to the recipe is your own business, and I will not be responsible." ”

"What do you mean?"

In an instant, Wang Guan and the others frowned, their eyes full of doubts. Why, this sounds like a rhythm of fooling people.

"Don't think I'm lying."

Professor Liu shook his head lightly and said indifferently, "Have you ever seen the ancient Taoist alchemy's pill formula?" ”

"Daoist Dan Fang?"

At this time, Wang Guan vaguely understood: "You mean to say that the formula of Luan Jiao is written in hidden language?" ”

As we all know, in order to pretend to be gods and ghosts, and to prevent leakage, whether it is the "secret book" of cultivation or the pill of refining the elixir, it is written very obscurely. It is customary to use some secret words to represent something, and no one other than himself, his peers, and his disciples does not understand the meaning of it.

The most typical example is the talisman drawn by the Taoist priest, a bunch of messy symbols, ordinary people don't know what it means, so they have to be called ghost talismans.

If the formula of Luan gum is also like this, then it is not impossible. After all, Luanjiao itself has a lot to do with the fairy Fangshi, so it seems to be a matter of course to write in hidden language.

"This little friend is smart, you guessed it."

Professor Liu was very happy and gave a thumbs up and praised: "It is impossible for ancient recipes to be as detailed as modern secret recipes, and even the process is indicated. However, all ancient recipes have a bit of a large-scale phenomenon, and you need to explore it yourself to be able to grasp it. Luan glue is the same, only the material is marked, and then it is simply mentioned that it needs to be steamed and dried before it can be finally formed. ”

"But these materials really have very abstract names such as unicorn horns and phoenix beaks."

While speaking, Professor Liu said frankly: "You need to study for yourself what these names are. This is the case, you still want to exchange, I can go and get the recipe out immediately. If you don't agree, then I can't help it, but I want to ask more, can you sell me the contents of the box? ”

That's what he said, but Professor Liu could predict it. Wang Guan and they must have agreed to the exchange. After all, when they tested each other, they had already grasped their psychological bottom line. It was only because they knew the importance they attached to the formula of Luan gum that Professor Liu decided to tell the truth. Besides, you can't hide it, and being honest with each other can also leave a good impression on each other.

"Qin Yue, what do you think?"

Wang Guan turned around and asked, and he also knew that he was doing something extraordinary.

Sure enough, Qin Yue nodded without hesitation: "Change!" ”

"In that case, you will take a moment." Professor Liu smiled and immediately got up and walked out.

"Take the original recipe, don't fool us with the copy......" Yu Feibai reminded loudly. I still don't feel very worried about Professor Liu's character.

"Yes."

Professor Liu nodded and left, returning shortly after, and then resting his things on the table. Wang Guan and the others hurriedly looked at it, only to see that the thing was a square box, and there was also a page of paper with words written on it.

Of course, this paper is not a contract, but a half-cut recipe.

Professor Liu is not stupid, it is impossible to make all the recipes public, otherwise Wang Guan and others will write it down. What if you don't exchange with him? So I wrote half of the recipe to show them, but the whole recipe was engraved in the box.

"This box is an antiquity from the Han Dynasty."

At this time, Professor Liu explained: "A few years ago, my ancestral house was relocated, and I accidentally turned this thing out of the corner. I thought the box was quite exquisite, so I took it back. When I returned home to look at it, I found that there were words engraved on the wall of the box. After research and investigation, it was confirmed that this was the formula of Luan gum. ”

"Things do look good. Could it be the container that held the glue back then? ”

Yu Feibai's speculation was approved by Wang Guan. On closer inspection, the box is made of brass. It is rectangular in shape, but has no edges and corners. On the surface of the box, it is decorated with cranes and auspicious clouds, which is very in line with the fantasy of the ancients for immortals. To a certain extent, it seems that it is not a price drop to use such a delicate copper box to hold Luan glue.

Regardless, researching the formula is the right thing to do.

At that moment, everyone's eyes also fell on the paper, and they saw a few lines written on the paper, not only unicorn horns, phoenix beaks and other unreliable materials, but also some ingredients, some ingredients for oily colloidal plants.

"That's two-thirds of the material." Professor Liu said bluntly: "Although there are a few key materials and methods for dealing with refining that have not been written, you should understand that I am not lying. ”

"Qin Yue."

Wang Guan groaned, and asked Chi Chi, "What do you think?" ”

"It should be true."

Qin Yue nodded slightly, her pretty eyes shining with surprise. Hard-working people, the sky does not pay, after looking for a few years, it finally pays off, and the excitement in her heart is difficult to express. Now that she didn't cheer, it also proved that she was calm and atmospheric enough.

"In that case."

In an instant, Wang Guan crossed his hands, made a mistake with the two boxes on the table, and then said with a smile: "Professor Liu, we have made a deal, do we need to write a transfer agreement or something?" ”

"Haha, it's a little thing, don't be so troublesome." Professor Liu also had a happy smile on his face: "Although we are only meeting for the first time, I also know that a few of them will not go back on their word and break their promises......

"Of course."

Yu Feibai nodded proudly, but after noticing the excitement in Professor Liu's eyes, he finally couldn't help but ask: "The thing is already yours, you can tell us now, what is this, right?" Even if it's resin, what kind of resin is it, and what exactly does it do, there shouldn't be any need to keep it a secret, right? ”

"Well."

At this time, Professor Liu hesitated, and after thinking about it for a while, he said with a smile: "It's not that I don't want to say it, but I'm afraid that you won't believe it." ”

"How?" Yu Feibai became even more curious, his thirst for knowledge exploded, and he patted his chest and said: "Don't look at us young, but over the years, we have seen a lot of strange things. You have a point, and there is physical evidence, so there's no reason why we shouldn't believe ......" (to be continued......