Zhao Dezhao is a child after all, and is Zhao Hongyin's only grandson, since the last time the immortal personally visited his grandson, and left the earth-shattering prophecy of ghosts and gods, the Zhao family regarded Zhao Dezhao as a treasure, and he was afraid of melting in his mouth, and he was afraid of losing it in his hand. Wherever Zhao Dezhao went, the people in the house followed, except for going to the toilet and sleeping, they felt like they were being watched.

Zhao Dezhao has been born for so long, and he only stays in the range of a few acres of land near the room, which can be described as a blind man crossing the river, completely ignorant of the situation. Once, in order to familiarize himself with the route and environment of the mansion, Zhao Dezhao walked around the entire Zhao Mansion alone without bringing his subordinates. It's just that the palm-sized place in the backyard is not allowed to enter, and the entrance of the gate is locked, but Zhao Dezhao can't reach such a high lock, so he can only 'look at the ocean and sigh'.

So after practicing martial arts one day, they ran to ask Dongxue about them, and they said that the backyard of the Zhao Mansion has always been a forbidden place, and non-Zhao clan members are not allowed to enter, and later asked their uncle and friend if they had gone to the backyard that place, Zhao Kuangmei shook his head, saying that he didn't know everything, but he also showed a curious baby look. At this time, Zhao Dezhao knew what to do.

That night, after Zhao Hongyin returned home on business, Zhao Dezhao ran to his grandfather in a hurry.

"Grandfather, Zhao'er has something to look for you."

As soon as Zhao Hongyin wanted to take off his court clothes, he saw his grandson running panting, "Zhao'er, what's wrong?" What's the matter with grandfather? ”

"Look at what my grandfather said! Could it be that Zhao'er must have something to do to find her grandfather. Zhao Dezhao squeezed his eyes at his grandfather and said angrily.

"So what is it that makes our Zhao'er embarrassed?" Zhao Hongyin knew what the kid was thinking about, but he also wanted to know what question the kid was asking, and then said, "As long as it's not difficult!" ”

"No, it's not difficult! This...... Grandfather, I went to the backyard today, Zhao'er wanted to go in and have a look, but the door of that place was locked, and then I asked the people, and they all said to look for you. ”

"You little slippery head, grandfather doesn't know what to do with you, but you can go in and have a look."

"Yes!" Zhao Dezhao nodded, and said crookedly, "Grandfather, I want to go in and have a look!" Please, grandfather. ”

"But ah, grandfather has been busy lately!"

"Grandfather has so many excuses!" Zhao Dezhao turned his back and lost his temper.

"Yo Yo Yo, look at what I'm used to you for, okay! Grandfather will take you in another day! ”

Zhao Dezhao hugged his grandfather's leg and shook it.

"Good grandson, grandfather will take you in tomorrow to have a look, grandfather has something to go out in a while, and I don't have time to accompany you!"

"Grandfather's words must count! Miscellaneous pull hook hook! ”

"Good!" Zhao Hongyin looked at his innocent grandson and agreed.

"Pull the hook and hang it for a hundred years, don't change, who is the little flower dog if it changes" The grandfather and grandson pulled the hook.

After speaking, Zhao Hongyin took Zhao Dezhao to finish eating, and went out after dinner.

A day later, Zhao Hongyin took Zhao Dezhao to ......

The grandfather and grandson came to the door in the backyard of the Zhao Mansion one after the other, only to see that the door in front of the door was locked by a huge lock.

"Grandfather, open the door quickly, my grandson wants to go in and take a look!" Zhao Dezhao urged beside him.

"Zhao'er, don't worry." As he spoke, Zhao Hongyin took out a key from his arms and aimed it at the keyhole.

Zhao Dezhao held his breath and stared intently. Then only the sound of unlocking was heard, and the heavy iron chain "clanged" and fell to the ground, raising dust.

Zhao Dezhao was about to push the door in, but Zhao Hongyin stopped him.

"Zhao'er, you try to push this door!"

"Oh!" Zhao Dezhao didn't know the mystery of this door, and there was no trace of movement when he stepped forward to push the door, and then he tried to eat milk, but he couldn't push it, even if he wanted to pull the door.

This door that can't be pushed or opened, Zhao Dezhao thought to himself what this door is made of, it is stronger and more windy than the anti-theft door......

"Grandfather, I can't push it." Zhao Dezhao couldn't use his strength to eat.

Zhao Hongyin let out a burst of laughter.

"Zhao'er, even my grandfather can't open this door!"

"Grandfather is good, bad, grandfather!" Zhao Dezhao didn't even want to pay attention to this old naughty boy.

Zhao Hongyin reminded, "Zhao'er, you will know if you see this gate carefully!" ”

Zhao Dezhao's eyes were always staring at the door, and he inadvertently noticed a small depression on the door, that place was very similar to an object, and then understood something, and hurriedly untied the jade pendant around his neck, "Grandfather, is this it?" ”

"That's right! The key to open the door is the jade pendant on your body, and the key to opening the door is it. Zhao'er handed the jade pendant to her grandfather. ”

"Yes."

Zhao Hongyin put the jade pendant into the small recess, which just fits this missing part. Then he turned that position, and in a few moments, the previously closed door slowly opened inside.

"Huh! It's amazing! I really didn't expect the ancient mechanism to be so extensive! Zhao Dezhao sighed from the bottom of his heart. Then all the knowledge about the Mojia Technique in Zhao Dezhao's mind became clear in his mind little by little.

Mechanism, it is the representative of ancient Chinese scientific and technological civilization, which applies mechanical technology and physical principles to make certain mechanical devices. Speaking of it, we have to mention the Mo family giant Mo Zhai (Mozi) during the Warring States Period, who advocated "both love and non-attack". Mozi was good at craftsmanship and production, and was superior to other princes in military technology, and could be called erudite and talented. It is said that he was able to cut three inches of wood into a bearing that could carry 300 kilograms in an instant. According to "Han Feizi? The outer prince said that the upper left contains: "Mozi is a wooden kite, which is made in three years and defeated in one day." In fact, as early as in ancient China, there were people who used the principle of leverage to solve the difficulties between production, one of which required a school to be the most thorough use, but also formed a set of professional theoretical knowledge, this school is the Mohist school in the Warring States Period, there is one thing to mention, that is, the ancestor of the Mojia family Mo Zhai used the principle of leverage to develop an orange tree, which was used to lift water. Subsequently, he also made wheels, pulleys, and ladders, which were used in production and in the military.

Speaking of tricks, I have to mention a character - the public loss class, that is, Lu Ban.

After Lu Ban arrived in the state of Chu, he invented a weapon for water warfare, "Hook Rejection", which enabled the state of Chu to overcome unfavorable factors in water warfare. When the Vietnamese ship retreated, it was hooked with "hook" to prevent it from running away; When the Vietnamese ships attacked, they resisted (rejected) it. Don't let it get close.

The Yue people were quite speechless back then, alas, with such an opponent, they would have to shed their skin if they didn't die.

In this way, the state of Chu finally defeated the state of Yue. The state of Chu won the victory by relying on Luban, eating the bowl and looking at the pot, and then the state of Chu wanted to attack the state of Song, and Luban became famous for the state of Chu to attack the state of Yue, and then the complacent Luban made a large number of "sharp weapons" to attack the state of Song, however, there is an old saying in China, "There are mountains outside the mountains, and there are people outside the people". Mozi was a "pacifist" who advocated "non-offensive" and opposed Lu Ban's invention for war.

In order to protect the Song State from being destroyed by the Chu State, then both of them showed their lifelong talents in front of the King of Chu, and finally Mo Zhai (Mozi) defeated Lu Ban, making the King of Chu give up the idea of attacking the Song State.

It can be seen that science and technology are really the primary productive forces!

It is a pity that in the following time, that is, from the unification of the Six Kingdoms of Qin to the early years of the Qing Dynasty, Moxue entered the lowest ebb. Generally speaking, it is difficult to implement the spirit of the Mohists who take the world as their own responsibility, and the unique giant organization of the Mohists is a mysterious organization in disguise, which is neither as good as Confucianism with the ideal of governing the world, nor as Taoism that can be deeply rooted in the heart, and even less as Legalism can be skillfully applied to politics, so the Mohist thought slowly declined.

Today, Zhao Dezhao can see this wonderful mechanical device with his own eyes, which can be described as a great eye-opener. Zhao Dezhao stood in place in a daze, distracted for a while.

The previous door had been tightly closed, and at the moment when Zhao Dezhao was out of his mind, suddenly, there was a "squeak", and the door slowly opened. Basically, during the whole process, Zhao Dezhao has always been stunned, even if there is any emergency, it is unknown.

In an instant, there was a smell of mold in it...... Zhao Hongyin saw that the situation was not good, and quickly covered his and his grandson's mouths......