People in the Qin Dynasty, entertained during the Warring States period

Even Cao Ze was unaware that he had two more children.

There's a saying: "If you can be a thief for a thousand days, you can't be a thief for a thousand days."

In this era without condoms and contraceptives, it is almost impossible to avoid impregnation through artificial intervention when having sex seven times a night.

Because there are always some who slip through the net, managing to overcome all obstacles and unite with a pre-existing partner who has been waiting for them.

These two children were conceived one after the other after Cao Ze left and the two sisters worked together to conquer the Zuo Xianwang tribe.

According to the imperial physician's diagnosis, it has been three months.

After a little deduction, the sisters guessed that it was in the days before Cao Ze left.

In order to escape, Cao Ze went to great lengths to torment them.

This left them no energy to think about it, and they never even considered the possibility that Cao Ze would run away.

However, despite being annoyed that Cao Ze had run away, the two sisters unanimously chose to stay.

She returned to the royal court, where she dealt with the enemies captured from the Left Wise King's side while also beginning to nurture her pregnancy.

Finally, half a month ago, after nine months, they each gave birth to a son in the second half of the year.

Cao Ze had no idea that he had become a father, and a super-duper one at that.

Ten days later.

After finishing his work at the Chunqing Palace and collecting some "salary," Cao Ze went to lecture at the Hundred Schools Forum as usual.

After discussing logic, the philosophy of mind, centralization and productivity, he introduced concepts from fundamental disciplines such as physics, chemistry, biology, and geography, enough to keep him busy for the next year.

On the lecture platform, Cao Ze looked at the bustling crowd below and knew that most of them were not there to listen to lectures, but to hear stories.

Otherwise, given the subjects he teaches, aside from a few disciples and students from various schools of thought, there are probably very few people who would come to listen.

Cao Ze deeply appreciated the benefits of telling "Journey to the West," so he did something that enraged his ancestors.

He plans to break down the remaining twenty-odd chapters of "Journey to the West" into two or three parts each.

Yes, wonderful, wonderful.

"What is physics? To quote Zhuangzi, 'To judge the beauty of heaven and earth and analyze the principles of all things,' this can be called physics..."

Cao Ze used this as the starting point to discuss physics.

They didn't immediately throw out concepts like acceleration and gravity.

Instead, it starts with what was discovered in the pre-Qin period, such as the pinhole imaging recorded in the Mozi, and gradually introduces the related concepts and theorems.

Cao Ze couldn't help but smile when he saw the disciples below, who were unfamiliar with the situation and didn't take it seriously.

Ancient times were not lacking in physics-related things.

A typical example is the mechanical arts of the Mohists.

However, the main reason why there was no systematic physics in ancient times was that no one realized its importance.

Or perhaps they realize it, but seem to have no idea where to start, and can only dabble in different things, going wherever their thoughts lead, mainly just thinking about it.

The most typical example is the Mohist classic, the Mo Jing.

Compared to lofty principles of governance, physics and chemistry are nothing more than gimmicks and tricks.

It's normal that it wasn't valued by the various schools of thought during the Warring States period.

In particular, if one wants to make achievements in physics, or in other modern disciplines, one must have relevant logical thinking skills.

I've always thought it wouldn't work.

That's why he started by talking about logic.

On the first day of physics, Cao Ze didn't talk much; he just gave an introduction.

Cao Ze slowly finished reciting half of "Journey to the West," skillfully pausing between chapters, and left the Lecture Room of the Hundred Schools of Thought in a seemingly slow but actually quick manner.

It wasn't that he was afraid of being "hunted down" by the crowd, but rather that he was in a hurry to get to Wang Dachui's blacksmith shop.

Judging by the time, the materials for the Faraday cage should be finished today.

Moreover, the weather is very gloomy today, and with the weather warming up slightly, there is a high probability of winter rain.

If the timing is right, one might be able to draw lightning into their body in the late evening or at night, thus gaining entry into the true essence of the Divine Sword Lightning Control Technique.

Cao Ze arrived at Wang Dachui's blacksmith shop.

The first thing you see is a room full of copper wires.

If this were modern times, he would give a bunch of bad reviews to any merchant who sold him such garbage copper wire.

But in ancient times, Cao Ze would have been very pleased.

Our ancestors were always very skilled.

"Hey, sir, you've come at the perfect time. We just finished pulling out all the copper wires this afternoon."

Wang Dachui stood beside Cao Ze, somewhat excited.

A true benefactor is a benefactor; with just one transaction, their blacksmith shop made a year's worth of money.

Without saying a word, Cao Ze gave Wang Dachui the gold chest containing 850 taels of gold, which he had exchanged from the Iron Blood Alliance of Zhao.

In the past ten days or so, in order to supplement his family income and to earn some more gold coins, he has put a lot of effort into increasing the intensity of his character's strength, but it has taken a toll on his kidneys.

"Here's the money. Now listen to my instructions and assemble the items according to my requirements."

"Alright, I'll arrange it right away!"

……

Chapter 163 Professional Sword Collector

Jingni held Xiaoyan'er in her arms, and stood in the courtyard with Liwu.

They looked at the copper cage that occupied almost half of the courtyard and exchanged bewildered glances.

Could it be that Cao Zehua spent more than half a month and two hundred gold coins just to get this copper cage?

Seeing that the Faraday cage was not in a good position, Cao Ze pulled it to one side with some effort, and then smiled with satisfaction.

Fortunately, he's quite skilled; pulling a few hundred kilograms is a piece of cake for him.

Now only the last step remains.

"Jing Ni, give me the Zhanlu Sword."

Jing Ni reached out and inhaled, causing the Zhanlu sword on the stone table beside her to tremble and shoot towards Cao Ze in the blink of an eye.

Clang—

Cao Ze gripped the Zhanlu sword and drew it.

Even in gloomy weather, the dark sword still gleamed with a cold light.

Li Wu watched as Cao Ze held the Zhanlu sword and gestured towards the bronze cage. A faint look of doubt appeared on her fair face as she asked in surprise, "Why did you take out the Zhanlu sword when you made this cage?"

She's a little worried that Cao Ze might be sick, and judging from the situation, it seems he's quite ill.

"Oh, this? Prepare to be struck by lightning."

Li Wu had no idea whether Cao Ze would be struck by lightning; she was currently utterly stunned by the lightning.

"Struck by lightning?"

Li Wu's long, drawn-out song caught Jing Ni's attention.

She was immune to Cao Ze's nonsensical remarks and could even understand a tiny bit of them.

"You intend to use this cage and the Zhanlu Sword... to cultivate with the help of heavenly lightning?"

When she and Cao Ze were fighting at night, she heard Cao Ze say that he wanted to use lightning to cultivate.

I thought it was just a joke, but now it seems like it's going to be serious.

Cao Ze replied matter-of-factly, "That's right, didn't I tell you already?"

Li Wu thought she was hallucinating.

"What a joke! Aren't you afraid of being struck by lightning? Even a grandmaster couldn't withstand that!"

Cao Ze patted Li Wu's shoulder and said earnestly, "Woman, you must believe in the power of science."

Li Wu retorted angrily, "What do you mean by science! You're asking for it!"

Cao Ze curled his lip, scoffed, and said, "I'm not arguing with you. Just watch."

He fixed the Zhanlu sword to the groove at the top of the Faraday cage as a lightning rod—no, to be precise, a lightning attractor.

Li Wu was speechless for a moment, then said to Jing Ni, "Jing Ni, why didn't you stop him? If he dies, I'll be ruined by him."

After being tricked by Cao Ze, her life and fortune are now tied to him.

It's as if Cao Ze took off and she took off, and Cao Ze crashed and she crashed; there was absolutely no room for maneuver.

Jingni shook her head slightly and said, "No need. You still don't understand him. He won't take risks easily."

She paused for a moment and said, "He asked me once before why the Zhanlu Sword didn't have any killing intent."

Li Wu asked in surprise, "Why?"

Jing Ni said, "I saw it in the secret files of the Luo Net. When the Zhanlu Sword was born, it was specially tempered by heavenly lightning by Ou Yezi, which is why it has no killing intent."

"Or rather, even if there is murderous intent, it will be purified by the lightning power contained within the Zhanlu Sword."

Li Wu seemed lost in thought.

As professional collectors of famous swords, Luo Wang is very clear about the origins of various famous swords, and has long compiled them into hidden scrolls that can only be viewed by qualified people.

Clearly, she wasn't qualified to look through it.

Cao Ze clapped his hands and climbed down from the Faraday cage.

Everything is ready now; there's no need to take any risks directly.

All of this is thanks to the Faraday cage he built himself.

However, we still need to wait until the Awakening of Insects, or a cloudy or thunderstormy day, before we can summon thunder.