Yanfu study.

A lean and elegant old man looked at the drawings on the table fixedly and was speechless for a long time.

After a long time, the old man finally turned around and said to the young man in front of him: "Ning'er, this drawing method and this ball bearing were both invented by that person named Li Zexuan?"

Yan Shaoning nodded and said, "Yes, Dad." ”

This old man is Yan Lide, the secretary of the Ministry of Industry, and the drawings on the table are exactly the same as those drawn by Li Zexuan during the day, it turns out that Yan Shaoning has completely copied the drawings drawn by Li Zexuan during the day with the memory in his mind.

Yan Lide's eyes flashed with a gleam, and he exclaimed: "This kind of drawing method has never been seen before by my father, but it is indeed very convenient and worth promoting, and this ball bearing is really a genius creativity, but unfortunately it is difficult to make."

I don't know who this son studied from, and his attainments in the way of machinery are so profound, I'm afraid that he has already caught up with Ning'er you, but it is a material that can be made. Ning'er, you invite him back to the house another day, and test him for his father's self-examination, if he is really talented and learned, the old man will go to His Majesty to ask for an official and a half position for him to be a prisoner in the future. ”

Yan Shaoning smiled bitterly: "Dad, the child also told Li Zexuan today, but he said that he wants to be filial at home, and he doesn't want to be an official at present." ”

Yan Lide's eyes widened, and he said angrily: "Nonsense, such talent, how can you not serve the country, another day you call that kid and talk to him for your father." At a young age, he began to be unenterprising, which is really unreasonable. ”

……

Before dawn the next day, Li Zexuan woke up, and he woke up in pain.

Feeling as if there were thousands of thin needles piercing in his mind, Li Zexuan felt that it was better to faint at this moment, but how could this kind of thing be said to be dizzy.

Li Zexuan hugged his head in pain, his face was hideous, his green tendons were bursting up, and beads of sweat the size of beans rolled down from his forehead and back.

"Ahh A tingling pain from the depths of his soul made Li Zexuan finally couldn't help but snort, but at this hour, it is often the time when people sleep the deepest, Xiaohe and Xiaoxi have not been awakened in the outer wing, and they are still asleep.

"Could it be that I'm just going to hang up when I just crossed over to the Tang Dynasty? Didn't I just think about tanks? You thief is so cheating father, just let the master find out that he also has a golden finger, so he wants to wipe out the master. This gold finger is special and there is no manual, and I don't know that I can't think about a big treasure like a tank! ”

A lot of anger and unwillingness flashed in Li Zexuan's heart, he just found out that he seemed to have a golden finger, but he didn't expect that now he would lose his life because of improper use. Can the hell blame me for that? I don't know what can be used and what shouldn't be used!

Just when Li Zexuan felt that his head was about to explode, there was a slight fluctuation in the dantian, and a trace of coolness came from his mind, which slightly relieved Li Zexuan's pain.

Li Zexuan was shocked, and suddenly remembered that he was seriously injured in Zhongnan Mountain last time, and he originally needed to recuperate for a month to recover according to Sun Simiao's wishes, but he used the "Taixuan Sutra" and recovered most of it in one day.

This shows that the "Taixuan Sutra" is very useful for recovering from injuries, but this time it seems to be a mental trauma, and I don't know if the "Taixuan Sutra" is useful.

Forget it, it doesn't matter, the dead horse should be treated as a live horse doctor, and if you don't take measures, it is estimated that you will not be killed by pain, but will also be brain-dead.

At that moment, Li Zexuan forcibly endured the stinging pain in his mind, sat up, crossed his knees on the bed, and carried the fifth layer of the "Taixuan Sutra" with all his might.

At this time, there was a warm feeling in the dantian, but it was useless, and there was still a sharp pain in my mind. Li Zexuan's face was ruthless, and he didn't believe it, the special Lao Tzu fought with you today.

With a strong spirit, Li Zexuan planned to go all the way to the dark, regardless of the pain in his mind, and ran the "Taixuan Sutra" frantically over and over again. I don't know how many weeks it has been running, the true qi in Li Zexuan's body is constantly compressing, his body is already all sweaty, and his clothes can be wrung out of water.

At this moment, his face was extremely pale and painful.

The hard work paid off, the quantitative change finally caused the qualitative change, Li Zexuan seemed to feel the true qi that had been compressed before, and a trace of it turned into a drop of liquid, only to hear a clear sound of "ding dong", and the mind that was extremely violent before heard this sound and immediately calmed down.

At this moment, Li Zexuan's mind felt extremely clear, just like the drought and explosion of the earth ushered in the moisture of rain, and he wanted to scream comfortably at this time.

"Could it be that my Taixuan Sutra has broken through to the sixth layer?" This was Li Zexuan's first reaction.

After taking a closer look, I found that the "Taixuan Sutra" was still in the fifth layer, but it seemed to be closer to the sixth layer than before, which means that it didn't take long for me to become a grandmaster.

Just why is the pain in my head gone? Could it be that this "Taixuan Sutra" can not only recover from physical injuries, but also recover from mental trauma?

I really can't find any other explanation, Li Zexuan can only think so.

But why did you almost kill yourself by experimenting with a tank last night? Is it because the tank is too large and the structure is too complex, and the mind can't bear such a large amount of information?

Want to try again? Li Zexuan thought deadly.

Li Zexuan really has no other way than to try it slowly, in the time-traveling novels he read in his previous life, the gold finger that the protagonist got is usually accompanied by a system grandfather, and he will introduce you to how to use it.

But I don't even have a manual for this gold finger, so I can only rely on my own groping.

Li Zexuan immediately remembered from small objects such as screws, and slowly, the things imagined in his mind became bigger and more complex.

It wasn't until he thought of the car in his previous life that a tingling came from Li Zexuan's mind, Li Zexuan knew that this should be his limit, and immediately interrupted his thoughts, he didn't want to continue to try the feeling of pain before.

At this time, Li Zexuan determined that his golden finger should be able to build a three-dimensional solid model of some industrial machinery and parts in his previous life in his mind, and then convert this model into drawings in detail through his own hands.

However, at present, this golden finger seems to have a limit on the volume and structural complexity of the object, and with its current ability, it can only barely build an industrial product with the complexity of a car.

But just that, Li Zexuan is already very satisfied. Although he studied mechanical design in his previous life, it does not mean that he can draw some three-dimensional models of mechanical structures in later lives without leaking, and I believe that no one will be idle to remember all mechanical structures in his mind.

Since this "Taixuan Sutra" can restore mental trauma, I don't know if it can strengthen my mental strength? When your mental strength becomes stronger, can you build more complex objects?

Since crossing over to this body, Li Zexuan obviously felt that his memory was obviously much better than in his previous life, before Li Zexuan thought that this was a benefit that all traversers bring, but now that he thinks about it, it doesn't seem to be the case.

It should be that "Taixuan Sutra" can not only strengthen the body, but also strengthen the spirit!

The more Li Zexuan thought about it, the more he felt that his speculation was extremely close to the correct answer. If this is the case, then if the "Taixuan Sutra" breaks through to a higher level in the future, wouldn't it mean that a larger and more complex machine model can be constructed in one's mind?

Thinking of this, Li Zexuan was a little excited. But at the same time, I also feel that my golden finger is a bit cheating.

If the body that I crossed over to hadn't learned the internal skills of "Taixuan Jing" that could not only strengthen the body, but also strengthen the spirit, wouldn't it mean that my golden finger was a waste, and it was estimated that it would be difficult to build a model of a screw in my mind.

Thinking about it this way, this golden finger is too special, and it also needs internal strength.

It seems that in addition to making the skills more powerful, the purpose of practicing in the future is to have one more thing, that is, to stimulate a more powerful golden finger.

Alas, before dawn, let's practice for a while!

The sad Li Zexuan turned into a practice machine again.

……