"It seems not. General Wang has sent the auxiliary barracks to Chang'an. It is estimated that Chang'an will be able to fight in less than three days. Huyanshi is not in good health now, and there are few people under his command. In addition, we attack the city, which is first-class. Chang'an city can't be guarded for a few days. Don't worry, city master."

Speaking of this, Xiao teased his face with pride, then suddenly remembered something and quickly took down a cloth bag from the horse behind him.

"The general asked his subordinates to give this to the city master."

Lu Qing picked it up and opened it. It was a bag of persimmon cakes

"Where did you get it?"

"It was sent by the farmers near Tongguan. They said that we beat away the Huns and avenged them. They insisted on giving us something, but the general wouldn't accept it. However, this package of persimmon cakes was accepted by the general because an old woman couldn't get up on her knees and kowtowed desperately. The general said, give it to the Lord of wanjian City, who will remember her kindness.

It is said that the old woman's children and grandchildren were all arrested by Liu Yao as strong men and died miserably in Chang'an city. Now she is the only old man left in the family. She lives on the hillside with her four-year-old granddaughter. The old woman is still worried that when her granddaughter grows up, she will be ruined by the Xiongnu people.

Alas, it's pathetic anyway. Later, the general asked me to take ten yuan and one hundred jin of gold cakes and put them in the old woman's house. He said it was your reward from the city Lord“

Xiaodou said that she was still a little melancholy. In fact, the old woman was good. Many residents near Chang'an City were caught and slaughtered for military food. They lived too far to avoid difficulties.

Take out a persimmon cake. Lu Qing puts it into his mouth and takes a bite. It's very sweet. Although it's hard, they can give them a package of persimmon cakes. I'm afraid it's for the little granddaughter at ordinary times.

After sending Xiaodou away, Lu Qing sat in the yard and was in a daze.

It seems that Yu Mingchuan is going to fight Chang'an and let her pass. In the case of Chang'an, Lu Qing feels that it is not difficult. It is better to fight at the martial arts pass. At most, he can't come out and endure for a few more days.

However, I wonder if Liu Yao will sit and wait for Chang'an to be taken. At that time, he will even lose his capital. It's not too much to say that he is a lost dog.

Therefore, Lu Qing felt that Xiaodou said that three days were too many. Yumingchuan would make a quick decision and capture Chang'an before Liu Yao reacted.

However, in this case, a large number of Tianlei bombs will be used. Later, some Tianlei bombs will be used to guard Wuguan and Tongguan, and to deal with Liu Yao.

It seems that she needs to make another batch of nitroglycerin, but it's inconvenient here. Maybe she can find a place to toss around in the imperial palace when Chang'an city is laid down.

Speaking of this, Lu Qing suddenly remembered that there was no suitable tool here, so she quickly sent a letter to Longxi to send her large set of things for making nitroglycerin to Chang'an together with the raw materials.

After arranging all this, Lu Qingcai asked a carpenter to help her make a pulley.

She just wanted to make a model for Gong Shuliang to see. People from his mechanism family can know the key of this thing at a glance. If he wants to further master it, maybe he can teach him something about mathematics and physics.

Although gongshuliang probably knew something about this, Lu Qing looked at these ancient calculation methods, but it was more convenient to use Arabic numerals and letters.

However, her own convenience, others may not, after all, they simply do not understand what that means.

The next day, when Lu Qing was fixing the pulley block on the shelf and winding a rope around it, he finally waited for another scout.

It's not funny this time. It's someone else.

"The city master, the general said that Chang'an city can be broken today. Let the city master prepare and live in Chang'an City directly at that time."

Nothing else. In this sentence, Lu Qing nodded and arranged for the scout to rest.

And she, keep busy with her.

Before noon, Lu Qing played with this group of moving pulleys.

As soon as the finger hooked the rope, a heavy stone lock on the other side was picked up. The cloud fell and the thief stared.

"What kind of magic is this?"

Lu Qing's mouth curled. It's also a magic. You can't change a word.

Lei Yin didn't give any comments. He ran over directly and imitated Lu Qing's appearance. Sure enough, he hooked his finger and hooked up the stone lock of dozens of kilograms on the other end. It's so divine!

Then, Lei Yin looked at Yunluo like a fool, which made Yunluo more convinced that this was Lu Qing's cover.

I don't know how much power that finger used!

Finally, even Lin Xiao and Bai Jitai tried curiously. Yunluo was unwilling to try.

Sure enough, just a gentle pull, the stone lock at the other end went up.

With an incredible look on his face, Yunluo really admired Lu Qing this time. However, when several wheels are hung together, he can pull a thousand pounds in four or two

Yes, this is four or two kilos!

If Gong Shuliang gets this thing, he's afraid he won't turn the world upside down.

At the beginning, I thought Lu Qing was talking big. Unexpectedly, she still had such things against the sky in her mind. It's terrible. It's terrible!

In order to sell off, Lu Qing asked people to cover the front and rear of the pulley block with two pieces of wood. In this way, the effect must be more amazing.

Yunluo praised again and again, and even called Ye Qiu, Cao Hongchang and Li Lanxin to play this novel thing together.

Finally, even the weak Li Lanxin could easily pull up the stone lock and couldn't help laughing.

Therefore, Lu Qing's great invention to promote the progress of the times has become a new toy for this group of people.

After completing the pulley block, Lu Qing began to draw again in order to dispel her worries about yumingchuan.

This time, she was absorbed.

Because she was drawing gears and listed a lot of formulas next to them.

After learning this thing, most of them forget it. Especially after graduation, her work is not relevant. She can only calculate it according to her impression and a little memory.

Fortunately, her science scores were OK. After groping for some basic things, she remembered them again.

That night, she found the carpenter again. Lu Qing gave them the gear drawing she drew.

This time, the drawing is more detailed than the pulley block. She needs this to completely deter Gong Shuliang and make him stop thinking about Lu Dan.

In this era, although some people have seen gears, their usage is too rough and not widely used. If she can show the most critical and precise side of gears to gongshuliang, gongshuliang will certainly make better things.

However, rigorous calculations are also required.

The next day, Lu Qing was busy. He occasionally received a report from the scouts about the war in Chang'an. In short, there was no bad news. It is said that the injury on Yu Mingchuan's arm is also improving.