was reminded by Chen Xuyi, everyone's hearts were pinched, and a layer of white hair and cold sweat broke out on Li Er's back.

"These Turkic barbarians, sooner or later, this king will have to step on the steppe!"

Li Er's face changed in an instant, since the Li family raised troops in Taiyuan, they have been conservative against the threats and harassment of the Turks, promising I don't know how many benefits, who knows that these barbarians have a growing appetite, and the invasion of the Tang Dynasty during the Wude period has intensified.

"There is no need to mention the repair of Chang'an, but it is no problem to consolidate the important passes in the north, after all, the amount of work is small, and the construction is fast."

"And as long as this line of defense is strong enough, there is no need to worry about Chang'an."

Li Er sighed, Chen Shi still only knows one and doesn't know the other, the truth is this, the problem is that at this time, the three kings are fighting, and there is a father and emperor, and the ruling power of the army is not in the hands of one person.

What's more, there has been a lack of war for many years, and the Turks really want to attack on a large scale, and they can't resist it at all.

However, he was interested in using cement to rebuild important passes in the north.

"It's not bad for the house to be built into a brick and cement house, it is earthquake-resistant, and it can be slightly isolated from the cold and hot weather outside in summer and winter, and it is not afraid of water leakage or strong winds."

Chen Xu said the benefits of the cement house, Li Er and the others nodded again and again, they have also seen brick and stone houses, but the difficulty of building is too great.

But if cement is used directly for masonry, the difficulty is reduced countless times.

More than once in history, it has been recorded that the wooden house coped with the tragedy of a fire, and a single fire could burn half a city.

Li Er said excitedly: "At the latest, the construction can officially start tonight, the brick kilns in the whole pass have been requisitioned, and the production of cast bricks in full swing will not take twenty-five days, as long as the speed is fast enough, it can be completed in ten days." ”

Everyone was in a good mood, they ate and drank and left, and when they left, they took a little green tea with them, and they planned to try the taste of this tea according to Master Chen's method when they returned.

Chen Xu's civilization value is not unlimited, it is impossible to let the restaurant continue to operate like this, and by the afternoon he simply closed the door, anyway, his reputation had already been beaten.

In the restaurant, Zhang Gen worked diligently, while Chen Xu leaned on the chair, and Alun gently massaged him with his fingers.

Chen Xu noticed that although Aaron's fingers were white and slender, her skin looked very rough, and it was obvious that she had been working hard all this time.

Chen Xu subconsciously picked up her two fingers, and Alun trembled violently, but he didn't say anything, lowered his head and blushed and let him touch and play.

After all, for Aaron, he has already sold himself to Chen Xu, he is his own master, and if there is a need, he is also his own man.

"That's a beautiful hand." Chen Xu sighed, if Aaron's appearance is more than 70 points, his hand can be said to be 90 points, and if the skin can become delicate and smooth again, it is not too much to score 100 points.

Even those hand models in later generations are a little different from her.

After sighing, Chen Xu realized that he was a little rude, after all, in the future, he will be slapped if he touches a girl's hand for no reason, let alone now.

He quickly put it down and touched his head embarrassedly.

Aaron gave him a blank look, blushed and walked away, leaving Zhang Gen who was smirking next to him.

It's a pity that there are no all kinds of hand care cosmetics in later generations, and ordinary people have to be careful with soap, which makes Chen Xu feel a little uncomfortable.

His mother was also very beautiful when she was young, but after many years of housework, her hands were already very rough, and Chen Xu felt more and more uncomfortable when she saw Jing Siren.

"Ding, a strong desire from the host has been detected, and a temporary task is now issued."

"Teach Agen and Aaron [Ninety-Nine Multiplication Table] to get a reward [Skin Care Soap]"

"Teach 10,000 people to memorize and use the ninety-nine multiplication table to get a soap production line."

The voice fell in his head, and Chen Xu's heart was shocked, soap!

If you give this girl soap for a while, you must be able to further improve the skin on her hands and face, right?

As we all know, women are extremely protective of their skin, don't look at ancient times, the ladies at this time are still the same as the women of later generations, thinking about how to take care of themselves every day.

If the soap is taken out, as long as the effect spreads, not to mention the complete detonation of Chang'an City, it is estimated that people will flock to it.

Even if he doesn't say anything else, he usually uses this thing to clean his whole body.

Ninety-nine multiplication table is just a trivial matter, so he asked the two of them to put down what they were holding, gathered around him, brought paper and began to scribble on it.

"What's this?" Zhang Gen and the others were dumbfounded, just one opened their mouths wide and asked, and the other silently observed and thought, but they were completely clueless.

"Do you count?" Chen Xu asked the two.

Zhang Gen shook his head, and Alun hesitated for a moment before nodding.

"Aaron, you're really satisfying me!" Chen Xu happily patted Alun's little hand, and she shy her hand back into her sleeve.

"Zhang Gen, let me ask you, how much is one and one, and two is one?"

Zhang Genleng paused: "Two." ”

"What about nine ones?"

"Nine."

"Okay, let me ask you again, how much are two twos?" Chen Xu asked again.

Zhang Gen folded his fingers and counted, and asked uncertainly for a while, "Four?" ”

"Yes, what about three twos?"

Chen Xu was at the table, teaching the two of them for an afternoon, Alun really knew how to count, and the level was very high, although she didn't know what the ninety-nine multiplication table was, but she knew all the contents, which made Chen Xu very pleased.

It's just that Zhang Gen is so stupid, Chen Xu taught until it was dark, and he finally figured out all the multiplication numbers, but in a blink of an eye, he began to forget it again.

Because it is impossible to implement arithmetic and Arabic numerals at the same time, otherwise the difficulty will at least double, so Chen Xu teaches according to Chinese characters and numbers, and when he thinks of the educational task of 10,000 people, he suddenly wants to die.

"Ding, Zhang Gen and Alun have mastered the Ninety-Nine Multiplication Table, and you have obtained a box of skin care soap."

After Chen Xu was notified by the system, he hurriedly returned to his room, and took out a box of soap from the cardboard box on his bed and opened it quietly.

Smelling the fragrance that he hadn't seen for a long time, playing with this thing that felt cold and slippery to the touch, Chen Xu laughed and came back with two boxes.

"You two, this thing has been given to you, you come to the basin, and I will teach you how to use it."

Chen Xu asked Zhang Gen to bring two basins of water, and then asked them to wet their hands, apply soap to their hands and then wash them.

"This thing is called soap, which can be used to wash hands, face and skin all over the body, that is to say, it can be used when washing hands and bathing and washing face, its effect is to clean, protect the skin, and leave a fragrance on the skin."

"Whether it's for your own cleanliness and health, or for going out decently, it's a good thing."

Listening to Chen Xu's words, Aaron's eyes lit up suddenly.

She diligently smeared this slippery and fragrant thing on her hands, and felt that after it touched the water, it suddenly became like a small fish that slipped and did not leave her hands, and she couldn't catch it, so it fell into the water.