"'Artificial'?" The eldest sister took the place of Xu Shanduo and asked a question, and after asking, she and Xu Shanduo looked at Zhang Yanzhi with blank eyes.

"Yes, it is man-made, a lightning bolt imitated by man according to the natural avenues of the world."

"The natural avenue is the law and principle of the operation of all things in the world."

"Everything in the world has a reason, and these truths are interconnected and woven into a big net, which is the way of nature."

"Do you know about triboelectric electricity?"

Both shook their heads.

"When you brush your clothes with a dry brush, there are a lot of fine dirt on the brush."

"When you comb your hair with a wooden comb, your hair floats up with the comb."

"Take off your sweater in dry weather and you'll hear a slight crackling sound."

As he spoke, Zhang Yanzhi tore up some small confetti and threw it on the ground, and then he took out another piece of amber to rub it with his clothes, and when the amber got close to the small confetti, he actually sucked up the confetti.

"Frictional objects generate electricity, and the phenomenon that attracts small and light objects is triboelectric induction."

"This is one of the natural avenues."

As he spoke, Zhang Yanzhi took out another thing, which was Hawksby's glass ball starter.

The glass ball hoister consists of an empty glass ball with a handle and a support shelf, and when the human hand presses on the rotating glass ball, the space area inside the ball constantly flashes bright electric sparks.

"Ahh This is lightning! "Hawksby's glass ball motor is very attractive, very gorgeous and beautiful, and the eldest sister and Xu Shanduo both showed surprised expressions.

"Through the natural avenue of electricity, we can go one step further and create artificial lightning." Zhang Yanzhi pointed to the Tesla coil and said, he didn't talk about the too complicated voltage or anything, but the general truth is still the same.

"And Wu Youcai held the silver in his hand and led the lightning to his body." Zhang Yanzhi explained.

The eldest sister and Xu Shanduo showed expressions of sudden realization, and it was actually like this (1).

"The natural avenue is true, but how many people in the world believe it?"

"The world would rather think that the avenue of nature is an incomprehensible spell than think about the truth in it."

"That's why I founded the Purple Sky Divine Sect."

"In addition to helping the restoration of the country, we must also let the world understand and accept the natural way."

He intends to:

The upper-class elite of the Ming Dynasty was influenced by the natural avenue science of the Zixiao Divine Sect;

For the lower-class people of the Ming Dynasty, they continued to engage in the Zixiao God Cult and pretending to be gods and fooling the people.

Of course, pretending to be a god and fooling the people is just a means and skill in the scientific dissemination of the Natural Dao of the Zixiao Divine Sect, which cannot be relied on, and in the end, it is necessary to rely on the real science of the Natural Dao.

In addition, while preaching, the purpose of cultivating, brainwashing, and controlling the personnel of the denomination is achieved.

"So understand my suffering." Zhang Yanzhi said with a bitter face.

"Do you understand now? What else is there to ask? ”

"Understood! Teacher! ”

"Mingming, Ming-I understand, Uncle Shi!" The answer to Zhang Yanzhi was not only the answer, but also two pairs of eyes that had been confused

Zhang Yanzhi, who was tired for a day and a night, slept until noon the next day before waking up.

"Why don't you call me?" Zhang Yanzhi looked at the eldest sister and Xu Shanduo standing at the door and asked.

"Senior brother worked hard yesterday."

"Don't worry about the students, don't worry-"

"The students have finished exercising in the morning and are in the morning." The eldest sister quickly took over the conversation and said.

"Oh! Very good! ”

"I'm going out soon, so I'll leave it to you here."

"Let go, let go and rest assured." Xu Shan said with a stumbling face.

But Xu Shanduo's stumbling answer, Zhang Yanzhi was even more uneasy, he looked at the eldest sister's head.

"Don't worry!" The eldest sister gave him a firm look and a firm answer.

Zhang Yanzhi was immediately relieved, it seems that his 'confession' last night was very effective, and successfully stimulated their initiative, and it may be interesting to go down this road.

"Ahem, since it's already afternoon."

"Chongyun and I will go to Fenghu Academy first."

"Again, again, again—" Xu Shanduo looked reluctant.

"It's not a matter for Aosong Academy to put slides in class every day."

"We can't be satisfied with the status quo, we also have to look at how other colleges teach."

"Makes sense." The eldest sister replied.

At the end of the Ming Dynasty, Donglin Academy could appear in such a strange way, and it must have its special features, Zhang Yanzhi expressed interest in it, and could even absorb and learn.

"Let's go!"

"Ahh

This time, Zhang Yanzhi and the two went to the academy and did not have a strange campus brawl, but everything went smoothly to the study of the head of the academy.

As soon as the two of them sat down, the chief of the mountain ordered tea to be served, and asked:

"If I'm not mistaken, this should be Xu Chongyun, a student of this academy, right?"

"Zhengzheng, Zhengzheng is a student." Xu Shanduo stood up and replied, he and Zhang Yanzhi were both wearing purple ancient sword Tianyong City school uniforms today, which was both noble and mysterious.

And Xu Shanduo has already introduced them to the information of the mountain chief on the way:

Zeng Daoxing, Jinshi, served as the director of the Ministry of Industry and the doctor of Fengyi during the Apocalypse, and was invited to take charge of Fenghu Academy after he was dissatisfied with the government and resigned from the government.

"Hello! I am Zhang Yanzhi, an overseas Han Chinese. ”

"The Ao Song Academy."

"I hope to exchange and study with your college, of course, the sponsorship fee-" Zhang Yanzhi took out a stack of silver tickets in his hand, and his words were already very clear.

Zeng Shanchang immediately recognized that the silver ticket was issued by a reputable ticket number in Yangcheng Mansion, his eyes lit up, and a bright smile appeared behind his long beard.

"Disrespectful, disrespectful! It turned out to be Zhang Shanchang. He recognized Zhang Yanzhi's identity, and he didn't pay attention to Xu Shanduo's affairs.

It was the time when the mountain chief took a sip of tea, and Zhang Yanzhi directly handed over the silver ticket with a total of 200 taels.

That method is the same as his uncle's last time, don't be afraid to spend money if you want to do things, the problem that money can solve is not a problem, Zhang Yanzhi really learned something.

Zeng Shanchang took it neatly, quickly calculated the face value, and then said: "Five students came to borrow for two years, including food and accommodation." ”

"This, this, this-" Xu Shanduo almost jumped up, 200 taels of silver in exchange for these?

You must know that although Fenghu Academy has a threshold, it advocates education without class, and even a woodcutter can come in to audit, Zhang Yanzhi actually spent another money to come in? ! It's not worth it, is it?

(1) Generally, metal decorations were installed on the roofs of houses in the Ming Dynasty and the earth was connected with iron wires to protect against lightning.

In fact, as early as the Han Dynasty, the Chinese knew that the use of metal conduction played a role in lightning protection.