Under the guidance of Huang Chengyan, Nan Ye studied the wooden cows, flowing horses, wooden people, wooden dogs and other objects in the courtyard, and found that the wisdom of the ancients should not be underestimated. Even if Huang Chengyan was on the side to explain, Nan Ye only had a general understanding of the internal structure, and some organ terms were not understood by Nan Ye.

Among the many models, the wooden ox and the horse are used for transportation, and the structure is the same as that of the wooden man, and it contains a labor-saving mechanism. The difference between the two is that the wooden ox is more wide, and has a belly like a cart box to carry goods. The drift horse is narrow and has no box, so if you want to carry things, you have to pack things and put them on the back of the horse like a real horse.

The roles of wooden dogs and wooden tigers are different. The wooden dog has a crossbow arrow hidden in its mouth, as long as the dog's tail is pulled, the crossbow arrow will be fired from the mouth, or the machine can be connected to the pedal, as long as someone steps on the pedal can trigger the crossbow arrow. The power of the wooden dog lies in the fact that the crossbow arrows hidden in the body are repeating crossbows, and ten crossbow arrows can be placed in the crossbow box, and they can be set to single shot and ten consecutive shots of crossbow arrows according to their needs. The wooden tiger is larger than the wooden dog, and the mechanism is more complex, and there is something hidden in the tiger's mouth that ignites the fire, and the mechanism can spit fire and smoke when activated, which is simply an ancient flamethrower.

Nan Ye was pleasantly surprised to see these wooden models, pestering Huang Chengyan to ask questions. Huang Chengyan was also pleasantly surprised, because every time Nan Ye asked a question, he could ask about the idea, and the question was the most sophisticated and complex part of the organ or the main body of the organ, which showed his unique vision. This made Huang Chengyan want to accept Nan Ye as an apprentice even more.

Nan Ye was not stupid, and naturally heard Huang Chengyan's solicitation, but he didn't come to be an apprentice, but to recruit Huang Chengyan's father and daughter for his own use, so he naturally refused to agree, just pretending to be stupid and diverting Huang Chengyan's topic. Huang Chengyan mistakenly thought that Nan Ye refused to admit himself because of Hua Tuo, a medical teacher, so he had to secretly say that it was a pity, and temporarily put aside the idea of accepting apprentices, and regarded Nan Ye as a confidant and a New Year's friend, discussing the tricks.

Hua Tuo's medical skills are indeed top-notch, and Huang Yueying regained her vitality early the next morning and was able to walk on the ground. Although the body is still a little weak, it is only a matter of time before it recovers.

As soon as Huang Yueying was able to move, she asked her father Huang Chengyan to find Nan Ye, wondering if the wooden man who could walk on two feet had any practical value.

Looking at Huang Yueying's expectant gaze, Nan Ye was puzzled: "Yesterday, Huang Gong had already explained to me the advantages and disadvantages of Trojan horses and wooden people. At present, Trojans are better in terms of stability and practicality. Although the wooden man can save materials, the production process is more complicated, which can be said to save materials and labor, and the production cost of the wooden figure is higher than that of the Trojan horse. ”

Huang Yueying is an extremely smart woman, how could she not know that what Nan Ye said was true, but she was unwilling to accept that the results of her hard work were useless. He asked with a gloomy expression: "In Mr. Wang's eyes, is Yueying's wooden figure a useless thing?" So why do I have to walk on two feet? ”

Nan Ye smiled: "Miss Yueying, this question is very good! Only by understanding why people walk upright can we understand the benefits of walking upright. ”

Huang Yueying and Huang Chengyan's eyes lit up when they heard this, and Huang Yueying couldn't wait to ask: "Then Mr. Wang, do you know why we are walking upright?" ”

Nan Ye nodded and smiled: "This is simple, I wait to walk upright naturally to free my hands and do more things." When it comes to running on the ground, we can't compare to cows and horses. When it comes to sharp teeth, we can't compare to tigers and leopards. However, we have a pair of dexterous hands, which can whip cattle and horses, and can build weapons to hunt tigers and leopards.

Miss Yueying's creation of wooden figures and Trojan horses is like letting people race against horses, comparing their weaknesses with their strengths. If one day the wooden figure can move as freely as a real person, the hands freed by the bipedal structure will be able to do more things, bringing greater convenience to us. ”

Huang Yueying never thought that the wooden figure she made would one day be able to move like a real person, and Nan Ye's words seemed to open a door in her heart, allowing her to see the scenery outside the door. At first, Huang Yueying paid attention to Nan Ye just because he had extraordinary knowledge and wanted him to be a referee. But at this time, Huang Yueying had already determined that Nan Ye must be a fellow practitioner, and he could see farther than himself and his father. Creating a wooden man like a real person, isn't this the ultimate of the Mohist technique!

Huang Yueying, who recognized Nan Ye, began to look at the middle-aged man in front of her, as if she wanted to get acquainted with this Wang Hua doctor again. But soon Huang Yueying's eyes widened, and then she smiled slightly and said, "What Mr. Wang said is extremely true! Yueying created a wooden figure but didn't know how to use it, so she was really ashamed. It's just that since Mr. Wang has this insight, why does he hide and dare not show his true face? ”

Nan Ye traveled all the way, and this was the first time that someone saw the flaws in Hua Tuo's disguise technique, and couldn't help but say tentatively: "What did Miss Yueying say this?" I was born to be like this. ”

Huang Yueying smiled: "This is strange, could it be that Mr. Wang was born, and his arms and head and face are not the same color?" ”

Nan Ye didn't need to look in the mirror to know that he was exposed, and when Hua Tuo changed his appearance at first, Nan Ye also noticed the difference Huang Yueying said, so he also applied a black and yellow potion on the back of his hand to keep it consistent with the complexion on his face. But along the way, Nan Ye must have washed his hands more times than he washed his face, which caused his hands to lose color badly, and he had already returned to his original complexion.

Now that Huang Yueying has seen through it, Nan Ye doesn't want to hide her identity anymore, and says bluntly: "Miss Yueying has good eyesight!" I wasn't called Wang Hua, and my appearance was not like this, but I was forced to change my face and go incognito. ”

Huang Chengyan suddenly became nervous when he heard this, because in this troubled world, the people who have to be incognito are not good people, and he is afraid that this person will kill people if his daughter's identity is revealed. So he cautiously asked, "Who is that gentleman?" And why do you want to be incognito? ”

Nan Ye saw that Huang Chengyan was nervous, and couldn't help laughing: "Huang Gong, don't panic!" My surname is Nan, my name is Ye, and my name is Guanghua. The incognito so far is to visit Huang Gong, I don't want to make a mistake, I was invited to the house by Huang Gong halfway, it was not intentionally hidden, and I also asked Huang Gong and Miss Yueying to forgive me. ”

Huang Chengyan felt extremely familiar when he heard Nan Ye's registration, but suddenly he couldn't remember where he had heard it. Or Huang Yueying reacted first, and a pair of beautiful big eyes widened and said, "Could it be that Mr. Fei is the Great Dao Saint Guanghua National Teacher?" ”

Nan Ye nodded and said, "Exactly!" Mr. Yuan Hua and Yuan Jian are not their real names. Yuan Jian's name is Liao Hua, the character Yuan Jian, and he is a general under my command. Mr. Yuan Hua's name is Hua Tuo, the character is Yuanhua, and he is the holy hand of the famous doctor of the Han Dynasty. ”

Liao Hua's reputation is not obvious, but Hua Tuo is a famous person, and Huang Yueying was shocked when she heard it. At this time, Huang Chengyan also reacted, feeling both happy and a little scared in his heart, and bowed down and said: "I don't know that the national teacher is in person, the old man is really clumsy, and I ask the national teacher to forgive me if I am rude!" ”

Nan Ye hurriedly helped Huang Chengyan up and said, "Huang Gong doesn't have to be polite!" I came here to ask Huang Gong and Miss Yueying to go out of the mountain to help and serve in the Jiaozhou Academy of Sciences. ”

Huang Yueying had long heard of the name of the Jiaozhou Academy of Sciences, and also knew that Zuobo paper, printing and various new agricultural tools and instruments were all invented in the Jiaozhou Academy of Sciences. At that time, he said excitedly: "I can also serve in the Academy of Sciences as a woman?" ”

Nan Ye flattered: "That's nature!" I've never seen such a clever woman as Miss Yueying. With the girl's intellect and invention, I am afraid that it will not be long before she becomes the dean. ”

Huang Yueying, like Hua Tuo, longed for the Jiaozhou Research Institute, the holy land of science, and was about to agree at that time. However, at this time, Huang Chengyan's eyes flashed, and he coughed twice and interrupted the two of them: "Ahem~ The kindness of the national teacher is understood." It's just that since the old man lives in seclusion here, he has no intention of becoming an official again. As for the little girl being alone, the old man is not at ease, and how about allowing my father and daughter to discuss? ”

Nan Ye didn't want to invite Huang Chengyan, a hermit, because Nan Ye knew that Huang Chengyan's wife Cai was of the same clan as Cai Mao, and Huang Chengyan's first choice if he wanted to become a leader should be Liu Biao, otherwise his wife would not agree. Nan Ye's main target is actually Huang Yueying, whether it is a wooden ox or a crossbow that can determine the outcome of the war, Nan Ye naturally wants to be in his own hands.

Huang Chengyan did not agree to be out of office as expected by Nan Ye, and he also understood Huang Chengyan's concern about his daughter, so he nodded and said, "Huang Gong should act very seriously. However, Huang Gongda does not have to worry about the safety and life of Miss Yueying, and I promise to provide Miss Yueying with the most haode environment for the study of machinery and equipment. ”

Huang Yueying also pulled Huang Chengyan's arm at this time and begged: "Daddy, Yueying is not young anymore, she can take care of herself." Daddy let me go! ”

Huang Chengyan stroked his daughter's hair and said, "You have just been married and you are still a child in the eyes of your father, how can your father rest assured?" What's more, it is not advisable for you to travel far when you are just recovering from your illness, even if you want to go, it will take some time, I don't think the national teacher will mind. ”

Hearing this, Nan Ye hurriedly said, "What Huang Gong said is true! It doesn't hurt for me to wait a few days, but I still have to bother Huang Gong. Miss Yueying doesn't have to be anxious, you can think carefully about what you want, as long as the girl speaks, I will accept it. ”

Huang Chengyan was overjoyed when he heard Nan Ye's words, and took the opportunity to say: "The old man has a reluctant request, I don't know if the national teacher can agree?" ”

Nan Ye also let go out in order to invite Huang Yueying, and agreed without hesitation: "Huang Gong, please speak!" But I agreed to all my requests. ”

Huang Chengyan said with a smile: "What the old man asks for is not a difficult thing. I just want the national teacher to show his true face, and let the old man see what the world-famous Great Dao Saint looks like, and he can brag in front of his friends in the future. ”

Hearing this, Nan Ye immediately nodded and said, "This matter is unavoidable, and it should be so." He really didn't expect Huang Chengyan to make such a simple request, at this time he had already left Cao Cao's realm, no longer had to worry about the search and arrest, and it didn't hurt to remove the disguise. As for Liu Biao, Huang Chengyan can hide it if he wants to, but if he doesn't want to hide it, Nan Ye's makeup is useless, who made him clear his identity.