Xiahou Yulong looked happy, waiting for his father and second uncle to calm down.

With a smile, Xiahou Tao looked at his nephew and nodded from time to time.

When everyone calmed down, Xiahou Yulong said with a steady face: "Dad, second uncle, this time the child still needs to refine a little medicine to change his voice, so he must prepare for going to Shushan for this time." ”

Xiahou Zhang nodded with relief, "Go, go!"

Xiahou Tao was also secretly happy for his nephew's thoughtfulness, and nodded.

Xiahou Yulong saw that his father and second uncle nodded in agreement, and immediately saluted the two.

Then he walked to the iron pot on the fire rack, and said to Xia Chao and Tang Mo: "Tang Mo, you come to pay attention to the heat, Xia Chao, you go and bring the materials I said, and be responsible for putting the medicine and stirring." ”

Then, a variety of medicinal materials and materials jumped out of Yulong's mouth, and the two of them hugged their fists and promised, each performing their duties, busy before and after.

Subsequently, Yulong instructed Xia Chao to put the materials in different categories, so that Tang Mo could master the heat, and then began to refine the medicine.

"Xia Chao, three scoops of water, a bottle of spider venom, five drops of flower essence, and half a vial of pearl powder......

Okay, stir slowly, at the end of the Tang Dynasty, and the heat is smaller.

Well, add a little more fragrant pollen and add ...... Late Tang Dynasty...... Increase the heat ......" Bottles of potions were made, and they were carefully received into the empty jade bottle in Xiahou Yulong's hand.

Xiahou Yulong immediately took a knife and engraved the words "old farmer", "old man", "scholar", "merchant" and so on on the bottle.

In the end, Xia Chao and Tang Mo were already sweating profusely, and the last bottle of medicine was also practiced, which was inserted into the empty jade bottle, sealed by Xiahou Yulong, and engraved with the words "young woman", and the refining of the medicine was also completed.

Xiahou Yulong looked at the bottles of potion and was excited.

Immediately, Xiahou Yulong took out the jade bottle engraved with the word "old man", poured a drop into his mouth, and swallowed it slowly.

Everyone looked at Xiahou Yulong expectantly, and at the same time, they were a little worried in their hearts.

I just refined the medicine, but I got some poison into it, and I don't know if it will be okay.

But everyone has been numb to the many surprises that Xiahou Yulong has brought to them, and they look at Xiahou Yulong expectantly with the attitude of believing in Xiahou Yulong.

After Xiahou Yulong drank the potion, he slowly spoke: "Everyone, the old man is polite. ”

After speaking, he also saluted his father and second uncle in a funny way, but the voice was the voice of an extremely old man, and everyone who listened to it was shocked, and they looked at the pile of jade bottles curiously.

Then Xiahou Zhang asked, "Yu'er, the effect of this medicine is really so magical?!"

Yu'er, how are you feeling at the moment?!"

Xiahou Zhang immediately asked the question that everyone was most concerned about.

Xiahou Yulong took out another jade bottle engraved with "old man", poured out a drop and put it into his mouth, but the words engraved on the bottle were different from the original bottle.

Immediately, Xiahou Yulong slowly swallowed the drop of potion and said with a slow smile: "Daddy, second uncle, don't worry, I have already tried this medicine, and there will be no problem."

The original poison has long been neutralized, and this medicine still has the effect of nourishing the body!

And the effect of this medicine can change the voice for up to ten days with one drop, and there is also an antidote, which can be used in the same amount as this voice-changing drug, so Dad can rest assured. ”

"Hehehe, that's good, that's good, this time you go to Shushan, Yu'er, remember to be careful along the way, and often send messages to your family, you know?"

Xiahou Zhang changed his previous sternness and said softly.

"Father, don't worry, this time, the child will be careful and often send news to the family to report safety.

Daddy, for the sake of safety, there is one more thing that the child has to promise his father. ”

"Oh?!, tell me about it. ”

Several people suddenly looked curious.

"Dad, the child has discovered a hidden danger, that is, the letters exchanged by my Xiahou family are very easy to be intercepted by others, so as to know the secrets and intelligence of my Xiahou family.

Other families also have a lot of hidden dangers, so the child thought that in the future, we will use the form of a password to communicate. ”

"Oh?!

Password, what's that?"

Xiahou Zhang suddenly asked curiously, and Xiahou Tao also asked with an interested face.

"But this password has a ...... origin"

Xiahou Yulong immediately told the matter of the password.

During the Qin Dynasty, Qin Shi Huang wrote secret letters to convey important information, which were written in the form of ciphers.

For example, 'kun' stands for 'you', 'qian' stands for 'sitting', and so on.

When Qin Shi Huang wrote the secret letter, he carried a copper plate to decipher the code.

After Qin Shi Huang wrote his words, he immediately corresponded to the copper plate of the cipher, wrote the secret letter in the form of a cipher, burned the original manuscript, and then sent the cipher to the other party.

Even if someone intercepts the secret letter, there is no way to know what it says.

And Qin Shi Huang learned that the other party did not get the secret letter, and he would not worry that the other party would get the secret report, and it was very easy to track down the interceptor and eliminate him.

At the same time, if you learn that the secret report has been intercepted, you can also write another secret report and send heavy troops to guard and escort it.

After the other party gets the secret report, he can go to a heavily guarded tower, there are countless organs in the tower, and there are heavy soldiers guarding the periphery, and the recipient can enter the tower after getting the secret report.

In the center of the tower there is the same copper plate as Qin Shi Huang, and the person who receives the letter can use the copper plate to find out the information in the secret letter, print it in the brain, and destroy all the information to be foolproof.

After listening to this, the four of them all nodded.

Tang Mo and Xia Chao were even more shocked by the pedantic genius of their young master.

Xiahou Zhang thought that Xiahou Yulong usually liked to read, and these were all from the books, but he secretly decided that he would take a good look at the books in the future.

Xiahou Tao was secretly frightened, he knew that there was no record of this in his collection, but he didn't know where his nephew learned about it.

Xiahou Taofu thought of his nephew's various strangeness and the matter of the sword spirit, but he was slowly relieved in his heart.

And several people looked at Xiahou Yulong expectantly.

Xiahou Yulong continued: "The child is also inspired by this story, and along the way, the child has already thought of all the construction of the password.

Before he travels, the child will be able to complete the compilation of the codebook and hand it over to his father.

In this way, it is guaranteed that no one will be known about it.

This code is a big matter, don't tell others easily, there are still a lot of spies in my Xiahou family at the moment that need to be found out and eliminated.

But don't worry, when the child is successful in cultivation, this spy will not be a problem for a while, and the child will have a plan. ”

Xiahou Zhang nodded slowly and said, "In this case, you should prepare to go to Shushan this time." ”

Xiahou Yulong suddenly said: "Dad, there is no need to be in a hurry, the child still has one more thing to hand over to his father and second uncle." ”

After speaking, he looked at his father and second uncle expectantly, wanting to see the curiosity on their faces, but he was disappointed.

The two of them were already surprised by Xiahou Yulong's various surprises, and they were even numb to the continuous surprises that Xiahou Yulong brought to them.

Therefore, when they heard Xiahou Yulong's words, they were indifferent, and waited calmly for Xiahou Yulong to take out something.

Xiahou Yulong was disappointed, thinking of the various surprises he had shown them, they were not surprised when they thought about it, and it was no wonder that they showed such a calm look.

However, Xiahou Yulong thought evilly, "Hehe, when I take out this thing, after you understand the effect of this thing, I won't scare you to death." ”

But the two dead men looked at the young master like curious babies, and the vanity in Xiahou Yulong's heart soared.

"Hehe, I still have a lot of fans!"

Xiahou Yulong thought evilly, and the curvature of the corner of his mouth became more and more obvious and expanded