"Jingjue Country" actually turned into a swamp at that time, not the arid desert that later generations thought.

This point is actually worthy of careful study. Perhaps the disappearance of the "Shanshan Country" and "Jingjue Country" on the Silk Road is not due to excessive deforestation leading to desert migration as many people believe, but another reason.

"If we really want to go to Shanshan Country, I'm afraid we'll have to leave for a long time this time, and the journey is so long that Fei Nu won't be able to use it."

Bai Jingjing whispered.

This is indeed the case. The main purpose of flying slaves for their Hu army is to send messages for help.

But on such a long journey, there are powerful forces entrenched in the middle that Boss Cao cannot solve immediately. Even if Wu Liang can pass the news back, Boss Cao is beyond his reach.

"You are right, so if we really want to go, we must be fully prepared."

Wu Liang nodded, lifted up Bai Jingjing's hair and smelled it, then while holding her head and pushing her down, he said with a mean smile, "Jingjing, I think I can do it again..."

"

…

The next day.

When Wu Liang woke up, he asked Dian Wei to check in the backyard. He learned that Fang Qiong had not woken up until now. It seemed that he was seriously injured this time. He hoped it would not hurt his brain, otherwise he might never wake up.

But come.

However, this matter was not something he could decide, so he could only continue to wait.

Taking advantage of this time, Wu Liang taught Wei Bei to mount his horse and went to the Yongqiu County where the Hu army was stationed.

He had previously told Sun Ye, Thyme and Zhuge Liang to work together to improve the design of the "King Kong Umbrella" and "Flying Tiger Claw" and strive to build them as soon as possible to the point where they can be put into use.

besides.

This time Wu Liang brought back a lot of chisels with special materials from the public tombs. Those chisels have not rusted after thousands of years, and their strength has reached the level of cutting rocks. Melting them is exactly the way to make the "King Kong Umbrella" and "Flying Umbrella".

"Tiger Claw" is a good material, absolutely durable.

Of course, it is also a good material for making magical weapons.

So after asking Dian Wei what he thought, Wu Liang had already told them to design and find someone to use this material to make two halberds for Dian Wei.

As the saying goes, "A good horse deserves a good saddle."

For a strong general like Dian Wei, having such a sharp weapon would be even more powerful than an ordinary engineer shovel.

After returning to the Hu army station, Wu Liang just walked to the door of the workshop specially assigned to Sun Ye, Thyme and Zhuge Liang when he heard a rather fierce quarrel:

"I've said it before, although your spindle is wonderful, it's not very practical. Take a look, it still doesn't work, right?"

"That's because the rotating mandrel is temporarily carved out of wood, and it is such a small rotating mandrel. Naturally, it cannot withstand too much force. How can it keep teeth? If the wood is replaced by fine iron, the strength will be natural.

different!"

"Don't argue. This time, I'm standing next to Sister Xiang'er. I just carefully observed the operation of your rotating spindle. As long as the bearing rotates, the shaft teeth on it will snap. It only takes a few times for the roots of the shaft teeth to snap.

A groove will be worn out, and even if it is replaced with fine iron, it is unavoidable, and the teeth may still be broken before long."

"Then what do you think we should do? Just use her tendons and hemp rope? Those things will only be more unreliable, and even if they are just touched by some water, they will affect the use!"

"..."

When the fight got here, Wu Liang had already pushed the door open and entered.

"Son."

"Master of the house."

"Talented brother."

The three people quickly stopped arguing and saluted Wu Liang together.

"What are you fighting about?"

Wu Liang asked with a smile.

"..."

Sun Ye and Thyme looked at each other without answering.

"Brother Youcai, look, this and that..."

Zhuge Liang picked up a rotating mandrel with broken teeth and came to Wu Liang and explained the problems they were encountering in detail.

"this……"

Wu Liang was not an engineering man, and he knew nothing about mechanical matters, so he had no right to speak.

However, after seeing the spindle that Zhuge Liang handed over, and especially after carefully looking at the small dents at the roots of the spindle teeth that were worn thin and making the teeth fragile, he suddenly thought of watching the spindle at a small broken station before crossing.

A popular science video I’ve seen.

It mentioned a phenomenon called "undercutting" related to gear operation.

Isn't this a coincidence?

He vaguely remembered that the name of the video seemed to be "Why can't the number of gears be less than 17? What will happen if it is less?"
Chapter completed!