The old man squatted on the ground, his eyes staring closely at the huge gantry crane by the river not far away, his eyes flashing.

An extremely tough rope looped around several densely packed round wheels, and was easily pulled by two laborers to lift the heavy object from the cargo ship docked in the locks. The cargo was bundled into a fixed quadrangular shape, lifted effortlessly, and then slid along the doorframe beam, and the cargo was hoisted from the cargo ship in the locks to the shore, and placed directly on a huge flatbed wagon, which looked like a thousand pounds of cargo, was easily pulled away by two healthy horses......

The well-informed old man Yu Ming has naturally seen such a thing, and he even understands the principle of some levers. But the huge gantry crane designed with such a clever combination of pulley and lever in one place is really amazing to the old man Yuming.

"Is this the kind of pulley recorded in the Mohist classic "The Book of Ink"? Could it be that this Fang Jun is actually the heir of the Mo family? ”

The old man was shocked and muttered in a low voice.

The book "The Book of Ink" compiled by Mo Zhai and his disciples contains a record of pulleys.

The theory of pulleys is mentioned in detail in the book.

The pulley with a fixed central shaft is called a fixed pulley, which is a deformed equal-arm lever that does not save effort but can change the direction of force. The pulley that moves with the central shaft and the weight is called the moving pulley, which is a deformed unequal arm lever that can save half of the force but does not change the direction of the force.

The old man Yu Ming, who had read all the classics of the hundreds of schools of thought, had naturally read this classic of the Mo family, so he suspected that Fang Jun was the heir of the Mo family that had been lost for hundreds of years......

Otherwise, how to explain Fang Jun's unpredictable mechanism?

It must be known that the core of the Mo family is not "love and non-attack", but a unique mechanism in the world! If it weren't for the heirs of the Mo family, at Fang Jun's age, how could he have such profound attainments in the art of organs?

Yu Minglei, who stood behind him, was silent.

He didn't seem to hear his uncle's doubts, his eyes were a little confused, he looked at the tall gantry crane for a while, then looked at the new sailing boats that were constantly testing data in and out of the shipyard, and then looked down at the solid pier poured with cement under his feet......

Why can that little pulley easily lift a load weighing up to a thousand pounds?

Why did the new sailing ship go faster in a zigzag pattern than downwind in a headwind?

Why is it that a pile of powder-like things, when mixed with water, sand, and stones, can be as solid as a rock?

Yu Minglei pursed his lips tightly, he felt that there was a door hidden in front of him, and some things were revealed behind the door, but some of them were not real, which made people very mad. He wanted to kick the door open and really see the new world behind the door......

If you don't understand these things, why don't you talk about the Supreme Heavenly Dao?

The old and the young pondered their own thoughts and fell silent.

The brisk footsteps behind him sounded......

Yu Minglei glanced sideways slightly, and saw Yu Mingxue walking quickly, with a cute bun face bulging and an unkind expression.

Yu Minglei asked casually: "What's wrong, I look very unhappy." ”

Just asking, he didn't think anything big was going on.

The two brothers and sisters are usually very close, and Yu Minglei knows a lot about the character of the tsundere girl. This girl is arrogant and willful, and she is by no means as pink and lovely, youthful and beautiful as she seems......

"Humph!" Yu Mingxue pouted, looking annoyed: "It's all that Fang Jun, who looks like a dog, but in fact he is a big bastard and a big pervert!" Shameless! ”

Yu Minglei was shocked, and his tone was ...... Could it be that Fang Jun's wolf is big and takes advantage of his sister?

Suddenly asked anxiously, "What did that guy do?" ”

Yu Mingxue clenched her little fists and said angrily: "Mouth flower, shameless, birds and beasts are not as good!" If he hadn't run fast, Ben would have punched his dog's head! ”

Yu Minglei was not surprised at all, but he knew that his seemingly innocent sister was actually a violent maniac, even if Fang Jun dared to provoke her, he would definitely be able to do it! What he was anxious about was what Fang Jun had done to make his sister so angry?

This is the old man Yu Ming, who was "thinking about life", was also shocked by his granddaughter, and said strangely: "What did Fang Jun do?" ”

Yu Mingxue's little face turned red, a little embarrassed, and said squeaked: "This...... That ......"

After all, Fang Jun's words were too obscene, although Yu Mingxue didn't react at first, and couldn't understand the deep meaning, but after sitting and thinking about it for a while, he naturally understood the obscenity and obscenity!

But how does a little girl repeat this?

The old man Yu Ming was also anxious, and asked anxiously: "You girl, are you talking?" Isn't that insulting you? Oh, just tell you that girls should love themselves and stay away from men, but you didn't listen, and now you're at a loss, right? ”

Yu Mingxue had no choice but to say: "Actually...... Didn't do anything, just talk...... It's so ugly......"

Yu Minglei is so anxious, why is this girl not as cool as she used to be, procrastinating?

"What the hell did he say? Molerating you? ”

Being forced tightly by her brother and uncle, Yu Mingxue was ashamed and annoyed, and she paused to tell what had happened, and finally said: "What did that guy say, 'How can the breasts not be huge to gather people's hearts, and how can the chest be uneven to level the world', woo, that black boy is a hooligan......"

The old man Yu Ming sighed: "'How can the breasts gather people's hearts, and how can the world be flat if the chest is uneven'?" Well, co-authored with rhyme, clear and insightful, worthy of being a poetic saint of talent, this statement is really meaningful and has a long charm......"

Yu Mingxue glared at the old man!

Is this what an uncle can say?

Which side the hell are you from?

The old man Yu Ming knew that he was speechless, and immediately grinned in embarrassment, and made a statement of righteous indignation: "Hmph, this son is so bold that he dares to say something flirtatious, it's really damned!" ”

Yu Minglei pouted and said: "Although Fang Jun's words are inappropriate, he can't blame him for all the mistakes, if it weren't for your aggressive and persistent questioning, how could he say such honest words?" ”

Yu Mingxue's eyes widened, and she said angrily: "Yu Minglei, are you my own brother?" ”

Seeing that the girl was about to cry, Yu Minglei hurriedly said without a position: "Yes, yes, of course!" That Fang Jun is really hateful, how about going to beat up Xue'er for his brother, how about it? ”

Yu Mingxue said angrily: "No, it's too cheap for him!" Go and behead him so that he will never speak filthy words again!" ”

Yu Minglei Khan ......

Chop off someone's head in one sentence? This girl is simply a wolf girl in sheep's clothing, too ruthless! Besides, although Fang Jun is a little vulgar, what he said is not wrong......

"That...... Beat it harder, okay? Killing someone, what, it takes a lot of blood, it's too cruel......" Yu Minglei had to carefully fight for Fang Jun's chance to live.

Yu Mingxue didn't do it, and said with a pause: "Do you want to kill or not?" ”

Before Yu Minglei could reply, his face suddenly became very exciting.

A voice sounded from behind Yu Mingxue: "What can't be killed?" What to kill? Kill chickens? Hehe, Miss Yuming is really smart and icy, Ben Hou has recently learned a way to cook chicken, and he wants to show off his skills to Miss Yuming......"

Fang Jun took a group of sailors to inspect the construction of the dormitory in the military port, but as soon as he turned out of the rows of neatly arranged dormitories, he saw the three members of Yu Ming's family talking, so he naturally wanted to come up to say a few words.

Yu Mingxue suddenly turned around, staring at the "black boy" who appeared with a pair of big bright eyes! Seeing Fang Jun's innocent appearance as if he had never done anything, he suddenly became angry in his heart, and he said coquettishly: "You ran fast just now, but now you are killing yourself, suffer death!" Who's going to eat your chicken......"

The petite body rushed forward, and the delicate lotus foot was raised, and a kick was kicked in Fang Jun's chest. Fang Jun was caught off guard, and even if he couldn't prevent it, he was kicked upright, his chest was stuffy, and his body flew out like a cloud.

But now he was standing on the embankment, and he flew out upside down, and fell directly into the water with a "poof......

Su Dingfang, Liu Renliang and other sailors looked at each other, and then shouted, and several people jumped into the water to rescue Fang Jun. Everyone knows that this little girl looks weak and cowardly, but in fact, her combat effectiveness is amazing, if she has enough strength in this kick, she can't kick Fang Jun to death? Even if you can't kick it to death, you have to choke to death......