Wang Li wanted to speak, but he thought of the other party's lonely situation, and finally didn't say anything more, and continued to try the three-piece suit with great interest.

Wang Li's equestrian skills are good, and with a three-piece horse suit, a skilled knight like him can completely free his hands on horseback.

It also means that fighting on horseback, holding a bow and arrows, is more relaxed and freehand.

Zhao Si, on the other hand, was studying the reclining chairs and wheelchairs sent by the craftsmen.

Needless to say, the recliner is mainly a design idea, without too much technical content, and it is wobbly and comfortable to go up.

"Zhao Bugen, try a wheelchair!" The warsmith rubbed his hands together and laughed.

Zhao Si sat down on the other party's earnest expression, and the craftsman pushed, Zhao Si was surprised to find that when passing through the uneven place, the feeling of bumps was not obvious.

"How?" Zhao Si got up and squatted down in surprise, but he didn't see such a thing as a spring.

The craftsman finally showed a smug expression for the first time in front of Zhao Si.

"Here!"

The craftsman smiled and pointed to the position of the structure of the wheelchair wheel support shaft.

Zhao Si was surprised to find that there were actually thick and thin bamboo pipes, and when he tried to put pressure on the wheelchair, he found that the bamboo pipes would fluctuate up and down with the pressure.

"Here's the trick? What was used? Zhao Si said in surprise.

"Bamboo slabs!" The craftsman gave an answer.

The craftsman then skillfully dismantled the wheelchair and removed the supporting shafts of the four wheels.

Two bamboo tubes of different thicknesses are sleeved around each other, and when disassembled, there are four bamboo slabs inside.

Zhao Si observed carefully and found the ingenuity.

The small bamboo tube inside has holes on all sides, and there is a wooden core in the middle, and the bamboo plates are fixed on the wooden core up and down, and as the pressure is applied, the bamboo plates will bend outward to provide elastic force.

Four axles, that is, four shock absorbers.

The bamboo plate acts as a spring.

Of course, the shock absorption amplitude is very limited, at most two fingers, the size of the two bamboo tubes are really in contact.

"I see!" Zhao Si also went to school, and immediately discovered the principle after disassembling it.

"Using the elasticity of the bamboo to reduce bumps, the bamboo tubes are sleeved to provide space for cushioning up and down movements." Zhao Si was surprised.

It's not too difficult to say that this thing is difficult, but this is the pre-Qin era.

"Zhao Bugen, this understands?" There was surprise on the craftsman's face, and some frustration that he was interrupted before he could pretend.

Zhao Si's hands-on ability is indeed not strong, but his ability to "invent" is strong!

After Zhao Si came to the Lantian camp, not to mention Wang Li, the craftsmen were all shocked.

Although Zhao Si's hands-on ability is not good, he has a set of methods, including Zhao Si's exclusive calculation method, which has become popular among craftsmen.

The disadvantages of Arabic numerals are obvious, but the advantages are also very obvious, modern operation formulas, as long as you are familiar with it, the efficiency of the operation is improved by more than one and a half points, and the craftsmen happen to be used, Zhao Si has no class, and is happy to spread useful knowledge in this era.

Craftsmen have a good impression of Zhao Si, mainly in this era when knowledge is directly equivalent to wealth, Zhao Si selflessly taught, gave them a lot of practical gadgets, and taught them modern composition methods, modern mathematics and application formulas, and the wealth boy is no different.

The most important thing is that Zhao Si is not arrogant yet, and Zhao Si can still understand the knowledge mastered by craftsmen, such Zhao Si is really difficult for them not to love.

"It's a pity that the bearing capacity of the bamboo plate is too poor, and I am afraid that it will have to be replaced every once in a while for a wheelchair, and it cannot be used on a chariot!" The craftsman's slightly lost opening.

"What if you use something stronger?" Zhao Si asked with a smile.

"Like gold!"

"How is that possible? Gold is easy to break and hard, either it can't provide elasticity, or it will break. The craftsman shook his head.

"What about a change of look?" Zhao Si then drew the shape of the spring on the ground.

"Is this easy to break?"

The craftsman looked at the shape of the spring on the ground and fell into deep thought.

After a long silence, the craftsman spoke: "I'll try!" I'll try! Maybe it's true! ”

After saying that, the craftsman hurriedly bowed and retreated, and he didn't have the heart to show Zhao Si the rest of the functions of the wheelchair and left in a hurry, Zhao Si looked at the back of the craftsman leaving and shook his head with a smile.

Yes, it definitely won't work.

At least with the smelting technology of this era, it is really enough.

Even if it is really rubbed by hand, mass production is a big problem.

Brass has a terrible poor elasticity, and bronze is only as good as it is good.

The best modulus of elasticity is still steel, but the iron smelted by the primitive iron-smelting technology of this era is brittle, and the elasticity may not be as good as bronze.

The end result may be a craftsman who has gone to great lengths to create a spring that simply cannot be mass-produced and is not very practical.

However, this is still very meaningful, at least it is a great step forward in turning theory into practice, and it will show the way forward for future generations.

On the other side, Wang Li ran for a long time, turned over and dismounted, and walked towards Zhao Si with joy on his face.

"This is a recliner? Let me try! Wang Li unceremoniously squeezed up and pouted Zhao Si with his ass.

The recliner swayed back and forth, Wang Li almost fell down with an unstable center of gravity, and Zhao Si reluctantly got up and sat on the wheelchair.

There is no stool these days, and it is really uncomfortable to sit on your knees, but there is no way, and the etiquette and customs are not so easy to change.

"The horseshoe can't see the clue for a while, I'll let the soldier lead the horse back and forth overnight, and I will know what the benefits are, this horse pedaling the saddle, it is really a wonderful thing!"

"I can pull my bow and arrow while galloping on a horse!" Wang Li had excitement on his face.

"Huh? Aren't all the steppe Hu people like this? Zhao Si was stunned for a moment.

Hearing this, Wang Li looked at Zhao Si with a strange face and asked, "Where did you hear this?" If all the grasslands are like this, how can there be Yan, Zhao and Qin. ”

"It is the most skilled rider, on the back of the horse, in the process of galloping, ten points can not be made five points, bow and arrow, one to reduce the riding speed, the other to maintain the body, hastily archery, one or twenty steps may not have, the arrow may not run faster than the horse." Wang Li seriously explained to Zhao Si.

"Did the Hu people first ride their horses to the range of the bow and arrows, then stop shooting, and then ride the horses to cover the distance, and so on?" Zhao Si discovered Huadian, but how funny he thought about it like this.

The main Zhao Si really doesn't know cavalry combat, his understanding of Hu Ren's tactics is limited to the classic kite flying style in online novels, archery far away, and he is running away if you catch up.

Then shoot and run, jumping back and forth.

Zhao Si really thought that the Hu people fought like this.

"Where did you hear that?" Wang Li looked at Zhao Si with a strange expression.

This kind of tactic cannot be said to be invincible in the world, and it can only be said that it will be shattered at the first touch.

This kite flying style in Zhao Si's mouth was quite explosive throughout the Spring and Autumn Period and the Warring States Period.

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