A prince, a housekeeper of the prince's mansion, a carpenter from the prince's mansion and eight guards with knives, just stood beside a field in a daze, watching an old man on Li Yuanjia's Zhuangzi use a zigzag plow.

From this end to the other, there are at least more than a hundred meters.

To put aside the bulky and huge straight plough of the past, it would take at least two oxen and two or three people to do it. The long straight wheel rests on the backs of two oxen, with one or two leading the oxen in front and one or two supporting the plough in the back, and each one needs to concentrate and closely cooperate with the movements of the other people or the oxen.

The speed of travel is not slow, but it is difficult to make a U-turn, and it takes quite good technique to get the plow to go in a straight line.

But now, with an ox and a plow, after only half an hour of practice, a fifty-year-old man can easily plough the field in front of him—it may be an exaggeration to say that it is easy, after all, in the cold weather of early March, the old man's back is already soaked by this time.

But there's no doubt that compared to the bulky straight plough of the past, this thing definitely deserves the word easy!

So when the old man finished the last column and Han Shan asked him to stop, he didn't even seem to be able to move his brain at all, and the whole person stood in place in a daze, but his left hand was holding on to the plow and refusing to let go......

"Uncle, how is this plow?"

After watching the ploughing process just now, Li Yuanjia already knew it in his heart, but he still asked with a smile at this time.

After waiting for a while without waiting for the old man's answer, Li Yuanjia's brows couldn't help frowning, and Han Shan hurriedly stepped forward and pushed the old man: "Boss, boss?!" The king asks you! ”

“…… Boom! ”

As if he came back to his senses all of a sudden, the old man swallowed and spat with difficulty, and then plopped and knelt on the ground again: "Big, king, this thing, this thing ......"

Stammered, trembled, but couldn't say anything after that!

At this moment, the old man's head was full of mush, because what had just happened completely subverted the common sense he had accumulated for decades of farming - the plow could still be used like this!

“……”

Rolling his eyes, Li Yuanjia felt extremely helpless.

So then Han Shan came out again, urging in a low voice while comforting, this time the old man quickly calmed down and began to stammer to answer Li Yuanjia's question: "Big, king, this thing is extremely easy to use, very labor-saving, only one cow and one person can drive cattle to plough the land, even if it is a family without cattle, it will save a lot of effort to pull it with people......"

Rory said a lot of things, and Li Yuanjia was not interested at all.

Can he know these things?

Compared with the old-style straight plow, the curved plow does have many advantages. Li Yuanjia has seen the old style many times, the length of the old plow is generally more than three meters long, and the straight wheel has to be stretched to the shoulders of two cows, so it is quite cumbersome; Although the quyuan plough made by Chen Mu was not directly reduced by half as Li Yuanjia requested, the length was less than two meters, and the quyuan only needed to reach the back of the cow's buttocks.

The plough frame becomes smaller and the weight is reduced, which is the core advantage of the curved plow!

Because in this era when the material is only wood, the smaller size means that the weight is greatly reduced, from the large plow that must be pulled by two oxen and supported by two people, to the small plough that only needs to be pulled by one ox and supported by one person, so it not only saves one cow, but also saves at least one person.

In addition, the reduced weight and smaller volume mean that it is easy to rotate and maneuverable, which can also increase the speed of ploughing.

That's why technological change is so important.

Just changing the wheel from straight to curved has brought so many benefits, so the emergence of the Quyuan plough can almost be said to be a very important revolution in the history of ancient agriculture, because it has greatly improved productivity and liberated countless working people - how many people are there in the entire Tang Dynasty in these years? Some of the land is for them to reclaim.

Especially in the south, paddy fields are the best use of Quyuan plows.

Because of the greatly reduced size, the curved plough will be the most suitable artifact for narrow paddy fields. Not only can cattle be pulled, in this era of serious lack of animal power, people will also be more effortless to pull up, once popularized, will greatly accelerate the speed of the Tang Dynasty's development of the south, and finally in the middle and late Tang Dynasty and even the Song Dynasty yielded fruitful results......

In a word, Li Yuanjia does not need the old man to summarize the advantages of Quyuan plow.

"Uncle, tell me about its shortcomings."

Encouraging the other party with a gentle smile, Li Yuanjia said with a smile: "Don't always say how easy this plow is and how labor-saving, we already know this." Now I'm going to let you say what makes it inconvenient to use, or what you want it to be better...... Anyway, it's what it means to let you find fault. ”

"Huh? Finding faults? Don't dare this, the old man doesn't dare! ”

“……”

Looking at the old man who immediately changed from excitement to panic because of his words, Li Yuanjia was speechless for a moment.

Well, he's too demanding of people.

So he glanced at Han Shan, first asked him to calm down the old man, and then called Chen Mu aside: "Remember, in addition to this old man, find a few more experienced veterans, and let them all try to use this curved plow!" You stare at them and ask them what they think, and the key is what is bad or needs to be improved...... For the next period of time, I'll continue to change! ”

"The King...... Does this have to be changed? ”

Although he was a little afraid in his heart, Chen Mu hesitated for a moment and then asked.

In his opinion, this curved plough is quite perfect, light and easy to use, and it is extremely simple to turn or change the ground, how much stronger than the original big stupid thing? Such a good thing, still needs to be improved?

Isn't that redundant?

"Of course, keep changing it for me!"

Glancing at Chen Mu obliquely, Li Yuanjia said calmly: "Go back and go to Lao Han by yourself, receive a reward for five times, and then wait for your improved Quyuan plow to satisfy everyone, and when you can't find a single fault, I will reward you with another ten times...... Chen Mu, don't let this king down. ”

“…… Boom! ”

At this moment, Chen Mu, who was desperately swallowing a mouthful of spit, where was he still in the mood to touch the meaning of the king's words?

Five!

That's a five-run!

When he heard this number, Chen Mu's two eyes instantly widened to the limit, and his two pupils suddenly shrank to the extreme!

The two blacksmiths made the king's favorite iron pot, and they only got a five-time reward.

And......

The back is done, and there are still ten runs!

Looking at Chen Mu's stupid expression, Sun Peng secretly shook his head.

No matter what era it is, it seems that money is the most effective, especially a low-status craftsman like Chen Mu, who has worked hard in the palace for a year, and in addition to being able to eat enough, he doesn't know if he can save consistent money...... No, you can't save it! You must know that even if it is the two closest maids around Li Yuanjia, Chunyan and Liu Mei, it is quite remarkable to be able to save one or two dollars in a year.

So it is conceivable how much these fifteen runs stimulated Chen Mu.

Thinking that it is such a guy who can improve the Quyuan plow and then adapt the history of agriculture, but he is desperately using his brain for a mere dozen yuan of reward, and his own treasury is lying on the stomach with tens of thousands of family wealth waiting to rust, Li Yuanjia couldn't help but secretly shake his head.

"If the whole world is like this, it's no wonder that technology is progressing so slowly."