After Wu He left, Xu Wenxiu immediately hugged Liu Lang and kept touching his arms and thighs.

"Son, are you really okay?"

What professors and deans are outsiders in Xu Wenxiu's eyes, only her son is the most important, she almost fainted when she heard Liu Lang faint, even if her son looks alive now, she is still not at ease.

"Mom, it's okay, it's okay, I'm too concentrated in class today, I sat for more than three hours and didn't move, I can't stand it as an adult, just eat some food in the hospital." ”

"That's good, that's good, I was scared to death just now, if something happens to you, what can I do!"

Thinking about it, Xu Wenxiu was really scared just now.

"Okay, Mom, you haven't eaten yet, you go eat first, I still have some homework to do!"

"I'll scramble eggs for a while, now is the time for you to grow your body, you must eat more. ”

Since Liu Lang fainted from hunger, Xu Wenxiu cooked more.

"Well, well, I'm a little hungry again!"

When it came to eating, Liu Lang's stomach was a little growling again, and it seemed that the things he had eaten just now were basically consumed.

When his mother went to cook, Liu Lang sat at the desk, laid out a blank piece of paper, picked up a pen and a ruler and began to draw on the paper.

Half an hour later, a machine tool was vividly drawn by Liu Lang, this lathe is not a complete machine, but a split into more than 20 parts, each part marked the position in the machine tool, but also marked by him size, some are one centimeter of inner diameter, some are ten centimeters of length, these are Liu Lang recalled.

"Son, come, eat first!"

Xu Wenxiu served a steaming meal.

"Eat!"

Liu Lang put down his pen and ate with his mother, watching his son gobble up, Xu Wenxiu was also completely relieved.

"Mom, you go to bed first, I'll rest when I'm done with my homework. ”

"No, you're just right, you can't study like this anymore, you have to sleep well during this time!"

Xu Wenxiu's face sank and said to his son.

"I still have homework to do!"

"Then I'll find your teacher tomorrow and ask him not to leave any more homework, he will definitely listen to me!"

"This ......!"

Xu Wenxiu was determined to ask Liu Lang to rest early, and Liu Lang had no choice.

"Well, it's seven o'clock, and I'll go to bed at half past nine, okay?"

Liu Lang usually has to study at ten o'clock in the evening, and sometimes it is almost eleven o'clock.

"No, you can only learn eight o'clock, and you have to go to bed at half past eight at most. ”

"It's too early!"

"It's still early? Look at the neighbors, they basically go to bed at nine o'clock, whose children learn in the middle of the night like you? It's this problem that makes you tired, if you don't change it, I'll go to Principal Zhao Tianming and let him take care of you!"

"Okay, okay, then I'll go to bed at half past eight!"

Liu Lang couldn't resist it, but his mother finally agreed.

"Hurry up and draw!"

Liu Lang sat down at the table again and began to draw.

"Alright, it's eight o'clock, go to bed!"

Mother's voice rang out again.

"What? so fast?"

Liu Lang was still short of more than two dozen parts, and he felt that it had only been a few minutes.

"Mom, it's half past eight, it's over at half past eight!"

Liu Lang glanced at his watch and said immediately.

"It's half past eight, go to bed!"

Liu Lang's mother walked to the table.

"It's just one short, it's just one short!"

Finally, when Xu Wenxiu was about to take the piece of paper away, Liu Lang completed the exploded drawing of a machine tool, a total of one hundred and fifteen parts, each of which indicated the position, and also drew the size, the position was absolutely correct, but the size was roughly calculated by Liu Lang, and the error should be within half a centimeter.

"Okay, wash your face and feet!"

Seeing that Liu Lang was quite crisp, Xu Wenxiu nodded, moved the poured hot water basin over, Liu Lang washed his face and feet, and then fell on his bed with a grunt, he was indeed very tired, and fell asleep after a while, Xu Wenxiu came over and covered the quilt for his son, and turned back to his room.

The next day everything was as usual, Liu Lang got up at seven o'clock and went to the cafeteria with his mother to have breakfast, and then went to the dormitory to find Juniper and a few people to go to school together.

At the end of the first class, Liu Lang ran to another classroom, Xiong Huaizhi happened to be out of class, and hurriedly came over to ask after seeing Liu Lang.

"Liu Lang, are you okay?"

"Professor Xiong, this is the exploded view of the machine tool I drew last night, you can see if there are any mistakes!"

Liu Lang handed the piece of paper to the other party.

"Exploded view, what exploded view .........!"

Xiong Huaizhi just glanced at it, his face suddenly changed, his arm loosened, and the books he was holding fell to the ground.

"This ......... You drew this?"

Xiong Huaizhi ignored the books that fell to the ground, looked at Liu Lang like a ghost, and asked.

"Yes, I spent more than an hour drawing it last night, Professor, can you see if there are any mistakes?"

"The parts are exactly in the right position, the shape is correct, the dimensions are ...... I don't know all about the size............!"

That's right, even Xiong Huaizhi can't know the size of each part!

At this moment, Xiong Huaizhi was extremely shocked in his heart, only once to write down all the parts of this machine tool, even if there are not many parts of this machine tool, only more than 100, it is the simplest machine tool, but this more than 100 parts are not the same, there are round, square, ellipse, triangle, prismatic, and many special shapes, just the shape will be divided into more than 20 types, and the size and size will be divided into more than 10 kinds.

Xiong Huaizhi can also do this, but that is after several years or even more than ten years, he has been working in the machine tool room every day, and he is familiar with all their parts to the point that he can no longer be familiar with them, and Liu Lang only looked at it for three hours yesterday, and then drew all these parts accurately in more than an hour, which he had never heard of.

"Is this really what you drew from memory after yesterday's lab class?"

Xiong Huaizhi asked.

"Yes, not only this machine, but also the disassembly of another machine tool I have written down, and I can draw it completely, but I was too tired last night to have time to paint. ”

Liu Lang actually wrote down all four machine tools, but in order not to be too arrogant, he directly halved them.

"What? You wrote down the entire disassembly process of the two machines? You didn't fool me, did you?"

One machine tool shocked Xiong Huaizhi, two machine tools were "confused", Xiong Huaizhi's head was dizzy at this time, how to see how Liu Lang felt unreal.

"Do you have a class in a moment?"

Xiong Huaizhi asked.

"There was a Mazza class, but I never did. ”

Liu Lang replied.

"You still have that kind of class with your memory, go, follow me back to the office. ”

Xiong Huaizhi took Liu Lang to his office.

"Now you're going to draw me the composition of the other machine. ”

Xiong Huaizhi handed Liu Lang a pen and a piece of paper.

Liu Lang didn't talk nonsense and drew on paper.

This time Liu Lang just drew a sketch, a disassembled machine tool body, and then marked the parts in various positions, just after drawing more than a dozen parts, Xiong Huaizhi has confirmed that what he said is true, Liu Lang did record all the process of yesterday's three hours in his mind.

"Okay Liu Lang, you don't have to paint anymore, you ...... You......... You're better than me!"

Xiong Huaizhi smiled and patted Liu Lang's shoulder, this was the first time Liu Lang saw Xiong Huaizhi laughing, just like an old man looking at his own child.