Transmigrating to the Three Kingdoms as Lu Bu: I Have a Pseudo-Apocalypse System

After the first month of the lunar calendar, the Great Han Empire officially entered an era of technological explosion.

At the Imperial Academy, the subject of physics became the most popular course. Students eagerly studied physics, chemistry, and biology. Although they couldn't understand much of it, they all knew that this was knowledge personally taught by His Majesty, knowledge from the gods, and that learning it would definitely be useful.

Liu Hong and Zheng Xuan, along with a group of students from the Imperial Academy, began studying universal gravitation. They built a tall tower in the backyard of the academy and dropped iron balls of different weights from the top, recording the time it took for them to fall.

Through repeated experiments, they discovered that no matter how heavy the iron ball was, it took the same amount of time to reach the ground when dropped from the same height.

Liu Hong excitedly ran to the imperial study and reported to Lü Bu: "Your Majesty, our experiments have confirmed that objects of different weights falling from the same height will land at the same time. This is completely consistent with the law of free fall that Your Majesty taught us."

Lu Bu laughed and said, "Good, this is the law of free fall. Continue your research and see if you can calculate the relationship between the speed of a falling object and time."

Liu Hong cupped his hands in greeting: "Your subject obeys the decree."

Ma Jun then led a group of craftsmen to begin grinding microscope lenses.

This was no easy task. The lenses had to be ground thin and clear enough, and they also had to be standard convex and concave lenses. Ma Jun spent two months and discarded hundreds of pieces of glass before finally grinding the first qualified convex lens.

He inserted two convex lenses into a copper tube, pointed them at a leaf, and was immediately stunned.

The veins of the leaves were clearly visible, magnified dozens of times compared to what the naked eye could see. There were also some strange little dots on the leaves, densely packed, and I didn't know what they were.

Ma Jun rushed to the imperial study and presented the microscope to Lü Bu.

Lu Bu took the microscope, examined it, and nodded in satisfaction: "Good, this is a microscope. Continue to improve it and strive for higher magnification. Also, use the microscope to observe various things—water, soil, food, wound pus—and see if you can find those tiny insects that are invisible to the naked eye."

Ma Jun cupped his hands and said, "Your subject obeys the decree."

In the days that followed, the people of the Imperial Medical Academy began to observe various things with microscopes.

They discovered that there were indeed many small insects swimming in the tap water, some shaped like sticks, some like balls, and some like spirals. However, in the boiled water, all of these insects became motionless.

They also found that people who didn't wash their hands had many small insects on their hands. After washing with soap, the number of insects decreased significantly.

Gibbon compiled these findings into a report and presented it to Lü Bu.

After reading it, Lü Bu picked up his brush and wrote: "These are bacteria. Many diseases are caused by these tiny things. Issue an imperial decree that, effective immediately, Luoyang shall take the lead in implementing public health reforms. Drink hot water, wash hands frequently before meals and after using the toilet, do not urinate or defecate indiscriminately, collect and dispose of garbage centrally, and filter and settle sewage before discharging it. The Imperial Hospital shall be responsible for supervising the implementation."

Yoshimoto accepted the order and left.

The Daehan Xunbao newspaper published numerous articles reporting on the discoveries made under the microscope and the importance of public health reform.

Newspaper boys went from street to street: "Microscopes have revealed countless tiny insects in the water! Drinking raw water is like drinking insects! His Majesty has ordered the implementation of public health measures: drink hot water, wash hands frequently, and do not urinate or defecate indiscriminately!"

The people were skeptical, but after seeing the pictures of the insects in the newspaper and looking at the mud on their hands, many began to pay attention to hygiene.

In Luoyang City, public toilets were gradually built, with walls plastered with lime and floors paved with cement, making them clean and tidy. Garbage collection points were also set up, and garbage was cleaned daily by designated personnel. Sewage pipes began to be laid, and domestic sewage was filtered through three-stage sedimentation tanks before being discharged into the Luo River.

The people at the Imperial Medical Academy even composed a jingle, which the newsboys sang everywhere: "Drink boiled water, stay healthy; wash your hands before meals and after using the toilet; don't urinate or defecate indiscriminately, and don't litter; maintain good hygiene, stay healthy, and live to ninety-nine."

Children learn quickly and keep repeating it at home. Adults hear it so often that they start doing it too.

After more than half a year of implementation, by the end of 406 AD, the public health situation in Luoyang City had significantly improved. Fewer people had diarrhea, fewer people had fevers, and even the city's stench had lessened considerably.

Seeing the positive results, Lü Bu ordered the public health reforms to be extended to all prefectures and capitals across the country.

In May, good news came from the experimental farm of the Agricultural Department of the Ministry of Industry.

Han Hao rushed into the palace, knelt down, and reported, "Your Majesty! The sweet potatoes, potatoes, corn, and peppers in the greenhouses are all ripe!"

Lü Bu was overjoyed and immediately led Jia Xu, Guo Jia, Chen Gong, and others to the experimental farm outside the city.

The farm is located ten miles east of Luoyang City, covering an area of ​​100 mu (approximately 6.7 hectares), and is surrounded by a wall. Inside, there are four glass greenhouses, each covering half a mu (approximately 0.067 hectares). Sunlight shines through the glass, making the inside of the greenhouses warm and cozy.

Lu Bu entered the first greenhouse and saw that the ground was covered with lush green sweet potato vines. Han Hao had someone dig up a vine, and underneath it grew more than a dozen sweet potatoes of various sizes, the largest of which was the size of a fist.

Holding the sweet potatoes, Han Hao said excitedly, "Your Majesty, these sweet potatoes were planted in the first month of this year and matured in four months. I counted them, and each plant produced fifteen sweet potatoes, weighing a total of about five catties. Based on this, one mu (unit of land area) can yield about two thousand catties."

Lu Bu took the sweet potato, examined it, and said, "Good. Sweet potatoes are very adaptable and not picky about the land. They can be planted on hillsides and sandy soil. Issue an order that all of these sweet potatoes be kept for seed and continued to be cultivated in greenhouses to expand the seed production scale. They will be taken out for trial planting next spring."

Han Hao cupped his hands in greeting: "Your subject obeys the decree."

The second greenhouse was planted with potatoes. Han Hao had someone dig up a plant, and there were seven or eight potatoes growing underneath, the larger ones being the size of eggs.

Han Hao said, "Your Majesty, a single potato plant can yield two or three catties. I asked Zhou Yu, and he said that potatoes grow better in colder climates. I think we can try planting them in the north first."

Lu Bu nodded: "Good, potatoes are cold-resistant and suitable for the north."

The third greenhouse was planted with corn. The corn stalks were more than a meter tall, with two or three ears of corn on each stalk, and the golden corn kernels were neatly arranged.

Han Hao broke off a corn cob and handed it to Lü Bu: "Your Majesty, this is corn. Zhou Yu said that corn can be used as food or as animal feed. One mu (unit of land area) can yield three to four hundred jin (unit of weight)."

Lu Bu took the corn, looked at it, and said, "Although corn yields less than sweet potatoes and potatoes, its taste is much better than wheat and millet."

The fourth greenhouse is planted with chili peppers. The chili pepper seedlings are covered with red and green peppers, some pointed and some round.

Han Hao picked a red chili pepper and handed it to Lü Bu: "Your Majesty, this is a chili pepper. Zhou Yu said it's very spicy and can be used as a seasoning. I tried one, and it was so spicy it brought tears to my eyes."

Lü Bu laughed and said, "Chili peppers are a good thing; they can ward off the cold when eaten in winter."

After inspecting the greenhouse, Lü Bu said to Han Hao, "These four crops, especially sweet potatoes, potatoes, and corn, can be staple foods. Once they are widely promoted, the people of the world will never have to go hungry again. You must carefully study their growth habits, when to plant them, when to harvest them, what kind of fertilizer to use, and how to prevent pests. Record all of this and compile it into an agricultural book to be distributed to all prefectures and counties."

Han Hao cupped his hands in greeting: "Your subject obeys the decree."

Lu Bu was in high spirits after returning from the experimental farm.

He sat in the imperial study and said to Jia Xu, "Wenhe, sweet potatoes and potatoes are the food I have left for the people of the world. With them, even in years of famine, the people will be able to fill their stomachs."

Jia Xu said, "Your Majesty is wise. On behalf of all the people of the world, I thank Your Majesty."

Lü Bu waved his hand: "No need to thank me. I am the emperor, and it is my duty to ensure that the people have enough to eat."