Wang Mubi and Erin, through a few alleys, came to Zhang Mazi's residence, only to see a large pile of wood piled up in the open space at the door of the house, Zhang Mazi was constantly processing a piece of wood, Wang Mubi looked at it, it seemed to be a cart.

"Ah, it's Erin, and that, that, oh, Lord Wang. Zhang Mazi saw Erin and the two, and it took a lot of effort before he remembered what Wang Mubi's surname was, and hurriedly put down the work in his hand and moved two benches that had not yet been painted, and handed them over.

"Well, don't be too nervous, I'll come to you and ask you something, what's the matter, see you're making a car, there aren't enough carts in the town?" Wang Mubi and Erin pulled the bench and sat down, and asked.

"Yes, during this time, there are too many things to be transported in the town, and there are not enough cars, no, Dr. Lin came to me again before, and I need at least five vehicles, but fortunately, I have stocks of materials in the rainy season, so I am rushing to do this every day." After Zhang Mazi finished speaking, he added,

"By the way, the picture of the wheelchair that Lord Wang gave me before, Granny Mei Ya said that she wanted me to make a few more for the old people in the town, didn't the adult say before, because of the limited time, so it is not very good, so I want to ask Lord Wang, how to improve the wheelchair?"

"Granny Meia? Oh, I remember, that bald boy's grandmother, right? Wang Mubi remembered the little bald head who followed Ivy everywhere to survey before, I heard that only he and his grandmother were left in their house, extremely sensible, speaking of which, most of the children in the town are very sensible, at least Wang Mubi has never seen a very bear, probably related to the situation in Luoxue Town. Wang Mubi shook his head and suppressed the thoughts in his heart, and told Zhang Mazi the key,

"In fact, it is to change the two-wheeled wheelchair to a four-wheeled one. ”

"Four-wheeled? However, if you have four wheels, it will be the same as a cart, and it will be inconvenient to move forward? And the appearance of a wheelchair is not suitable for four wheels. Zhang Mazi raised his own questions.

"You can have two big wheels, two small wheels, as for the direction, you can widen and thicken the baffle I asked you to do before, and then put the two small wheels underneath, and at the same time make the connection between the baffle and the wheelchair movable, so that your feet can control the direction, and then because it is four wheels, you can sit on the chair and turn the back two wheels, and you can move forward by yourself. Wang Mubi simplified the various chairs in his mind and described them in as much detail as possible.

"This ...... In this way, you can move forward without being pushed! It's amazing, Lord Wang is worthy of the god that Uncle Qian said! You must have come down from heaven to save us!" Zhang Mazi lay on the ground exaggeratedly, Wang Mubi couldn't stand this strange feeling, and hurriedly helped him up,

"Okay, okay, there's nothing godless, don't call any adults, just call me a pen like them. Wang Mubi didn't like this kind of statement similar to feudal superstition in his heart, and corrected it.

"How can this be, Lord Wang, how can I call you by your name!" Zhang Mazi resolutely disagreed, and in the end, Wang Mo couldn't resist him, so he had to acquiesce.

"That's right, Lord Wang, then this wheelchair, how to sit firmly, before your wheelchair, there was a baffle on the ground, so it won't run around, but how to ...... this four-wheeled wheelchair" Zhang Mazi continued to ask.

"How do you stop your four-wheeled vehicle? Wouldn't it be good to think of a similar way, Zhang Mazi, you are a carpenter, you also have to think more, see if there is a way, can improve the current drawings, the principle is to make life more convenient, with this as the goal, whenever you have a good idea, record it, and then after work, think about it, how to transform these ideas into reality, understand?" Wang Mubi did not tell him the answer directly, but told Zhang Mazi a way of thinking, however, looking at Zhang Mazi's expression, Wang Mobi sighed, probably didn't understand.

Wang Mubi cleaned up his mood, took out a piece of paper, shook it with the wind, and spread it on Zhang Mazi's case.

"Come, Zhang Mazi, come and see this thing. ”

Zhang Mazi was digesting what Wang Mubi said, and when he heard Wang Mubi's words, he hurriedly came over to take a closer look, only to see two things drawn on the paper, the same, like Milai's hunting bow, but it was flat, the same, it couldn't say what it looked like, just like a four-wheeled cart, put a fishing rod.

"My lord, what is this?" Zhang Mazi looked at it for a while, touched his head and asked Wang Mubi.

Wang pointed to the bow pattern and said,

"This, called a crossbow machine, is equivalent to an enlarged version of the bow, but my diagram can only be used as a reference diagram, you have to think for yourself, how the specific settings should be, the useful things I provide here, you have to listen carefully, Irene, write it down for him. ”

Erin reminded softly,

"Master, Zhang Mazi is illiterate. ”

"Hehe, there aren't many literate people in the town, I only recognize the picture. Zhang Mazi touched his head embarrassedly.

“......”

“......”

Wang Mubi was speechless again, the people in the town are illiterate, and it seems that they still want to engage in education?

At this moment, a girl rushed out of Zhang Mazi's house and shouted,

"I can read and I can learn to tell my dad how to do it. ”

Wang Mubi looked at the girl who rushed out, about one meter two tall, her eyes were smart and bright, and her clothes were dirty, but it could be seen that most of them were oily rather than muddy, and her father Zhang Mazi had the same pockmarks on her face, no, it should be said that she was freckles, and they were concentrated on the nose and cheeks, not dense, and looked a little cute.

Zhang Mazi saw the little girl running out, and shouted loudly with Wang Mubi, and hurriedly scolded,

"Nonsense, where do you know any words, what are you doing when you run out dirty, don't bump into Lord Wang!"

As he spoke, Zhang Mazi grabbed the little girl and walked into the house.

"No, I learned calligraphy from Sister Ella, and I can also carpenter, why don't you let me help you!" The little girl struggled, but Zhang Mazi had the strength, which one could break free from a small child, and seeing that she was about to be dragged back to the house, the little girl's tears were about to fall out.

At this time, Wang Mubi spoke,

"Hey, don't be so fierce, put the child down. Wang Mazi used to pull Zhang Mazi, but the strength was too small, only one was brought and fell to the ground, Zhang Mazi saw that he knocked down the Wang Muzi pen, and hurriedly put down the little girl, ran over to help Wang Mozi, the little girl saw the opportunity, and immediately ran to Erin to hide.

"Oops, I'm sorry, I ...... I didn't expect to knock you down, sir, are you okay?" Zhang Mazi hurriedly wanted to pick up Wang Mubi, but Wang Mobi just waved his hand,

"Alright, alright, it's okay, that, you, yes, that's you, don't hide behind Irene, you come here. Wang Mubi pointed at the little girl and said, the little girl saw that her father was afraid, and she was also a little afraid of Wang Mubi, and she didn't dare to step forward timidly, Erin smiled and pushed her,

"Okay, the master is a good person, he won't do anything to you, just ask you a few questions, Xiaoke, you have to behave well, the master thinks you are good, and your father can't stop you." ”

Erin obviously knew about the little girl, smiled and squeezed her eyes, and the little girl finally mustered up the courage and walked in front of Wang Mubi.

"Big... Hello adults!"

"Well, don't be nervous, Erin called you Xiao Ke, are you called Zhang Ke? Or did I hear it wrong, Zhang Ke? Wang Mubi read Zhang Ke, a little weird, but since Wu Yongsun Qian, if he really called Zhang Ke, Wang Mubi is also acceptable, but the girl's name is obviously beyond Wang Mubi's expectations.

I saw the little girl say proudly,

"My name is Zhang Collistoll. ”