When Lux appeared in front of Chen Xiao in a light blue dress, Chen Xiao thought she was dazzled.

How did he feel like Lux was prettier again.

It's really life-threatening.

If the previous Lux was like a budding flower bone, then the current Lux is a blooming lotus, noble and distant, exuding a mature atmosphere that has not been seen before.

Ever since he knew that Lux had come to the Great Aunt.

It's a sign of maturity.

Chen Xiao thinks so.

Seeing Chen Xiao looking at him stunned, Lux's pretty face couldn't help but blush a little, and he said forcefully: "Look at what, be careful when I insert your eyes." ”

Hearing that Chen Xiao taught those messy wolf prevention techniques in front of the female soldiers, Lux had a feeling that these female soldiers were going to be led crooked by Chen Xiao......

This kind of despicable and shameless trick really makes the listeners cry and the seeers sad.

Chen Xiao pretended to smile embarrassedly and changed the subject: "Are you feeling better?"

Lux snorted slightly, slightly tsundere.

"That's just right. I was preparing to give a lecture on physiology, and the venue was ready and the staff were arriving. If you are interested, go to the community square to listen, and there is nothing wrong with knowing more about this knowledge. Chen Xiao said with a smile.

As soon as Lux heard the "lecture on physiological knowledge", she exploded, and her face was strange and ashamed.

This guy really plans to be more serious on "Big Aunt" to the end.

How perverted this guy is!

When they heard it, they all felt shy, Chen Xiao is such a big man, and he knows more than women......

Lux was about to collapse.

She left Chen Xiao, turned around and ran.

Chen Xiao smiled inexplicably, why is this chick's face so thin?

Blackstone Fort, residential community square.

More than 3,000 female slaves had gathered in the square, crowded with people, and the darkness was overwhelming.

A makeshift podium was erected in the square.

Chen Xiao was already on the podium and started his own lecture on physiological knowledge.

Sanitary napkins, bras and other small items were taken out by him as teaching tools.

As Chen Xiao's secretary, Arya is quickly writing and recording every word of Chen Xiao.

These words will need to be sorted out at that time, so that they can be printed in a book and distributed to everyone.

Listening to Chen Xiao unashamedly talk about the characteristics and care of women's menstrual affairs, as well as breast health care, Arya's face was already as red as an apple.

How perverted are they to know so much about women's private affairs.

Not only her, but even all the female soldiers present had been shocked by Chen Xiao's undisciplined exercises, and they were all shy when they heard it, not daring to raise their heads to look at people, and even cursing Chen Xiao in circles.

However, the more Arya listened, the more she felt that what Chen Xiao said was reasonable, and many women's private things were just like what Chen Xiao said.

Among them, the gynecological symptoms of women are the top priority of Chen Xiao's lectures, which she has never paid attention to.

The more she listened, the more fascinated she became.

Not only her, realizing the importance of what Chen Xiao said, these female soldiers put away their shame and listened carefully to Chen Xiao's lecture.

Just because Chen Xiao speaks the Tao at the head and the content is rich, all of them are dry goods, which benefits people a lot.

In the entire square, except for Chen Xiao's voice, there was no noise at all.

They all raised their heads and stared at Chen Xiao.

"Everyone knows a little bit about women's menstrual affairs and breast health. Finally, I would like to say that this is a sanitary napkin, which is used during menstruation and is already available in our supermarkets. Next, we will launch this bra that is different from the corset, so stay tuned. ”

Chen Xiao raised the sanitary napkins in his right hand and the bra in his left hand, and then walked off the podium amid warm applause.

Arya paused for the quill, feeling that the last sentence was the focus of the whole lecture.

She couldn't laugh or cry.

After the lecture, Chen Xiao found Rovinica and gave her a small gift.

Rovinica was baffled.

Because she was busy with work, she didn't attend Chen Xiao's lecture, so she didn't know the content of the lecture, and she had no clue about Chen Xiao's gift gift.

Could it be that Chen Xiao has taken a fancy to himself?

Rovinica had a faint sense of joy in her heart.

Being able to get Chen Xiao's favor may be a good life for her.

The royal sister-type Rovinica showed a charming and shy smile to Chen Xiao, "Thank you, sir." ”

"Just a small gift. I hope it can be useful to you, the specific use method is explained in the note inside, hahaha......"

Chen Xiao smiled, hiding his embarrassment at being turned over by Rovinica.

He is a lord, how can he be electrocuted because of a smile from his subordinates.

Calm...... Be sure to set the egg!

Chen Xiao made an excuse and disappeared from Rovinika's eyes.

The lethality of the royal sister is simply too powerful, and the chemical dog said that he couldn't afford it.

It's terrible!

After Chen Xiao left the city hall, he found Carl, this young man's previous performance, Chen Xiao saw it in his eyes and knew that this was a clever young man.

He appointed Carl as the director of the waterworks.

The importance of waterworks cannot be overstated.

Carl felt terrified and honored for Chen Xiao's attention to him.

He felt that he was so virtuous that he could serve as the director of the waterworks.

The waterworks has six large square pools, each connected by a channel.

Through a canal that diverts from the River Lane, each pool is already filled with water.

Carl's task now is to regularly clean up the pool of debris and keep a daily record of the water level, as soon as the water level is above the warning line of the pool, he has to release the water outlet and lower the water level.

Now, in addition to these tasks, Carl has to cooperate with Chen Xiao, supervising the workers to fill one of the pools with sand.

According to Chen Xiao, the function of these sands is to filter and purify, and they need to be replaced regularly.

In addition to the sand, Chen Xiao also ordered a pool of water to be filled with calcined charcoal.

These charcoals, after crushing, are made into granules, which Chen Xiao calls activated carbon, which is used to adsorb impurities, purify water quality and improve the taste of water quality.

Karl silently wrote it down.

Because these sand and charcoal need to be cleaned and replaced later, it is an important step for the waterworks to purify the water quality.

Next, Chen Xiao's move, Carl said that he didn't understand it at all.

Chen Xiao actually poured a yellow-brown powder into the first pool, and as soon as the powder entered the pool, it disappeared, and as Chen Xiao stirred the water in the pool, Carl saw a lot of clumps of material precipitating at the bottom of the pool.

According to Chen Xiao, these sediments are sludge impurities in the water.

After sedimentation, the water intercepted from the River Lane became much clearer.

Carlton was stunned.

It's like magic!

Their lord must be a mage master!

You must know that when the waterworks were built before, Lord Chen Xiao also asked an archmage to open up territory for him.

Chen Xiao saw that the sedimentation effect was okay, so he wrote down the amount of flocculant used in this pool water.

He chose ferric chloride as the flocculant to precipitate the water of the Lane River for the initial reaction.

The preparation of ferric chloride is not difficult for Chen Xiao.

After electrolysis of salt water, the separated chlorine gas is introduced into the water to form hypochlorous acid, and iron powder is added to react to make ferric chloride.

As long as the solution is dewatered and evaporated, ferric chloride powder can be obtained.

However, ferric chloride will slightly turn the water yellow, and the dosage needs to be more accurate.

As for disinfection and sterilization, you can use bleach powder directly, although chlorine is better, but chlorine is not easy to store, and bleaching powder is easier to store, which is the best choice.

After the water purification system of the waterworks was perfected, Chen Xiao set the operation process of the waterworks for Carl.

It's a boring job, and it's not easy, so it needs a person with a strong sense of responsibility to be in charge.

Carl is Chen Xiao's candidate.

"The villain must live up to the trust of the adult. Carl excitedly made an oath to Chen Xiao.

He will try to be the director of this waterworks.

"Not bad. I'm optimistic about you. Chen Xiao said with a smile.

After multiple layers of disinfection and filtration, the water that finally flows into the clear water pool is so clean and clear that it can even be drunk directly.

Chen Xiao was not afraid of unhygiene, so he took a sip of water directly from the water outlet.

The clear water is sweet and clear, comparable to mountain spring water.