Traveling through ancient times: daily life on the run

Everyone looked at each other in bewilderment, and no one dared to step forward. After all, they were beaten to the point of being humiliated by a little woman, so how could they dare to be unconvinced?

Qin Bingrui smiled wickedly, bowed to Dean Wen, and said respectfully, "Dean Wen, I have some time, and I can tell you some interesting common sense examples in life. If you don't mind, I will not be polite."

"Mr. Qin, please speak."

After all, they are all smart people, and Qin Bingrui must take this opportunity to give everyone a chance to rise.

The progress of society depends on talents like you.

At this time, some students had already taken out pens and paper and started taking notes.

It's really the style of a top student.

"Okay, then I'll just talk about some interesting common sense and examples in life. You can use your free time to do some small experiments to prove that what I say is correct."

Bai Lingyi and Fang Qingdao listened with their ears pricked up, afraid of missing a single word.

“Let me first explain the principle of focusing.

If students have the conditions, they can grind a smooth transparent crystal into a convex round mirror, that is, convex in the middle and smooth around the edges. In this way, people with poor eyesight can use this convex lens to magnify the font on the book and read it.

Of course, under direct sunlight, the crystal convex lens will focus the sunlight to form a high-temperature, hot point. If there are flammable materials such as paper, cloth, and wood under this point, these flammable materials will quickly burn and may even cause a fire.

Therefore, this crystal convex lens must be placed carefully at home."

When the students heard this, they immediately turned to discuss it.

"So, wouldn't it be possible to light a fire outdoors with just sunlight and a crystal convex lens? That's really interesting."

They may have thought this was more convenient than flint, but they didn't realize that crystal was a luxury in that dynasty.

Qin Bingrui nodded and explained again: "When your eyes become presbyopic and you can't see small print clearly, you can use a crystal convex lens to read books. It can magnify the font several times."

"Is it really that magical?"

"If you have crystals at home, you can ask someone to polish them. This is common sense, and everyone should know this."

In one word, everyone lowered their heads in shame, as if they didn't have the common sense that Miss Qin mentioned.

"Okay, don't feel guilty, everyone. It's not your fault. It's just that the academy doesn't teach these things that are useful to the world, and there's nowhere else we can learn them, right? It's not like everyone can figure it out on their own, right? Who has so many crystals to play with?"

He said it casually and immediately put the blame on Director Wenshan.

The headmaster's face turned pale, but the old man was knowledgeable and experienced, so he was not embarrassed.

He actually began to admire this Young Master Qin. If there was a chance in the future, he would have to find a way to have him come over to give some extracurricular lessons. This would be a good choice for students to think and seriously consider how to improve people's livelihood.

“Another thing, it’s cold in winter, and I’m sure all of you students will have charcoal fires at home.

Burning charcoal at home can produce carbon monoxide if the charcoal doesn't burn completely, leading to carbon monoxide poisoning. To prevent this, keep doors and windows open when burning charcoal and ensure good ventilation in the house.

Carbon monoxide poisoning may cause symptoms such as headache, dizziness, vomiting, flushing, and fatigue. If you experience any discomfort, you must immediately leave the environment and seek medical treatment in a timely manner.

"I said, two years ago, an old servant of mine died while burning charcoal in a closed room, and everyone insisted that he died of natural causes."

"I guess I have to be careful in the future. I like to burn charcoal fires in the house to keep warm in the winter."

"But what exactly is this carbon monoxide?"

Qin Bingrui laughed and said perfunctorily, "The name the first person who discovered it used for poison gas is similar to arsenic, both are harmful substances."

The person asking the question nodded with satisfaction. The students were quite humble in listening to the instructions.

He then went on to say that if a foreign object gets stuck in your mouth while you eat, you should use the Heimlich maneuver. The silver poison test method may be effective under certain conditions, especially when detecting poisons containing sulfides (such as arsenic).

After saying this, Qin Bingrui added, "If you want to kill someone, feeding them uncooked puffer fish will definitely not be detected by silverware."

"..."

The amount of knowledge he blurted out was truly admirable, and everyone was eager to find an opportunity to experiment with it.

"For the poisoning experiment, you can find some mice. Mice have strong reproductive capacity and grow several times faster than humans, so you can see the results faster."

"..."

He seemed to have grown a few more minds and could guess what everyone was thinking.

Qin Bingrui was so thirsty from talking that he drank several pots of tea and felt like he needed to pee.

Before he could say anything, Wenshan waved his hand to let the students disperse, and immediately asked the servant to take him to the toilet.

Qin Bingrui came back with a relaxed look on his face, but saw the dean and Bai Lingyi talking in low voices, as if they were asking something.

"Director Wenshan, is there anything you cannot let me hear?"

"Mr. Qin, you are worrying too much. I am only asking about Mr. Xiaobai's knowledge and studies."

"Don't worry about that. Anyway, you have all three children in my care. You can decide how much the tuition is. Don't ask me for a thousand taels of silver all the time. I might as well teach them myself.

By the way, I, Qin, never like to owe favors to others, so how about this, I will tell you an interesting story in private."

"Oh, what's the matter?"

Qin Bingrui hooked his finger, and Old Man Wen leaned forward, and Bai Lingyi's serious expression was amused and he grinned.

"I'll tell you quietly, actually, blood testing isn't accurate. If you want to quickly blend two drops of stranger blood, just add warm water or alum, and anyone's blood will blend quickly.

Furthermore, regardless of whether the blood of two people is related or not, when it is dropped into clear water, the drops will first remain still for a short time, then, over time, they will gradually spread and diffuse in the water, eventually merging into one."

"..."

What does this have to do with him? Old man Wen frowned. Could it be that he was cuckolded?

"Old man, let me tell you, the inheritance of a family's flesh and blood is actually meaningless. It can be easily faked. I believe that the meaning of inheritance is to pass on everything that is beneficial to the world. No matter who it is passed on to, the most important thing is that the inheritance is not broken, right?"

"That being said, if everyone could inherit the Dharma, wouldn't the world be in chaos?"

"That's right. After all, it's hard to control people who know too much. In this era, force is too difficult to suppress."

"Master Qin, you must not say such outrageous words."

Old Man Wen narrowed his eyes, not knowing whether this young man was really stupid or really didn't care.

"What Director Wenshan said is true. He is indeed an old gentleman with an open mind."

"By the way, Mr. Qin, may I ask where your master came from? What's your master's name and where does he live?"

"My master's surname is Gao Mingren, his courtesy name is Shiwai, and he lives in the late 23rd century."

"..."

Finally, the three students were sent to Songming Academy, and only three taels of silver were collected, which was one month's tuition. It was such a reasonable price.

Indeed, from ancient times to the present, taking the back door has always been unique.

Dean Wenshan just made a small request, asking Qin Bingrui to send some knowledge that can be applied in life to Songming Academy in the form of a letter after a period of time.

When Qin Bingrui heard this, he thought it was a piece of cake. He could even give the old man some suggestions on various inventions and innovations. Presumably, the speed of spread would be much faster than if he and Sister Luo Yu relied on their own promotion.

Before leaving, Qin Bingrui used the rice paper on the stone table to draw a three-dimensional diagram of a toilet with a side bench. He told the headmaster, "Headmaster, please find a skilled carpenter to study this diagram carefully. This thing will be very convenient for the elderly or those in poor health to squat in the toilet."

"..."

If the picture wasn't detailed and easy to understand, Wenshanchang would have thought that this kid was implying something about him.

How could a mere young woman not behave like a woman at all? Could it be that the disciples brought up by the masters were somewhat independent and peculiar, outstanding and unique?