When the sea ship of the Mi family in the East China Sea was steadily docked on the shore of the water, Zhang Ji, who had taken the sea route for the first time in his life, finally set foot on the land of Jicheng with the careful support of two guards.

On the dock, Liu He stood in the center, Hua Tuo stood on his right, and Liu Hui, Youzhou Mu on his left. When the three of them saw Zhang Ji get off the boat, they walked a few steps quickly to meet him.

"Dare to ask the person who came, but Nanyang Zhang Lao? Boy Liu He has seen the gift! ”

"Nanyang vulgar people, how dare the general of labor come to the dock to greet him!"

Liu He caught Zhang Ji, and then introduced Hua Tuo to him: "This is Hua Lao, his reputation spreads far and wide on the north and south banks of the Yellow River, and he has long been looking forward to you coming to the north!" ”

Hua Tuo is a few years older than Zhang Ji, but because he has always insisted on practicing Wufowl Opera, he looks a little younger than Zhang Ji. At this time, Hua Tuo's reputation was louder than Zhang Ji's, because Zhang Ji had not yet begun to write the famous "Treatise on Typhoid Fever and Miscellaneous Diseases", and Zhang Ji's medical saint's life was only sealed by his descendants after his death, and Hua Tuo was called a divine doctor when he was alive.

As a doctor, Zhang Ji has heard many legends about Hua Tuo in the south over the years, and at this time he was able to see Hua Tuo himself in Youzhou, Zhang Ji's heart surged with a strong desire to learn and communicate, but there was not much fame and fortune in the competition.

"After the end of school, I entered Zhang Zhongjing and saw Doctor Huashen!"

"Brother Zhongjing, this is going to kill Hua! One of the ways of medicine is broad and profound, my generation is just peeking into the door, how dare I call God in vain! ”

Zhang Ji is humble and easy-going, Hua Tuo has an open-minded temperament, and the first meeting between the divine doctor and the medical saint in Jicheng seems cordial and harmonious, but it saves Liu He a lot of trouble to match these two Xinglin Grandmasters together.

In the spacious and comfortable carriage, Liu He rode in the same carriage with Hua Tuo, Zhang Ji, Liu Hui and others. The carriage drove on the right side of the wide, flat road, and Zhang Ji, who sat against the right window, could see the scenery on both sides of the road outside the car through the thin window screen.

The wharf has been built for many years, and is an important distribution place for Jicheng's goods to be transported to the south by land, and not far from the wharf is a continuous handicraft workshop area. From the pier to the old town, you need to pass through the entire industrial park, Zhang Ji saw many towering cranes and pulleys along the road. He was curious about these new things, so he kept asking questions. Although Liu He has the most respected status among several people, he is the youngest, and in line with the attitude of respecting the elderly, Liu He acted as a narrator for Zhang Ji and explained all the way into the inner city.

In the evening, Liu He set up a banquet in the prince's mansion to catch Zhang Ji, and all the characters in Jicheng were present, which made Zhang Ji feel flattered. Although Zhang Ji didn't like the welcome and send-off in the officialdom, the guests who came to greet him at night did not say some polite words in the officialdom, but talked very seriously about the plague that had recently begun to spread in the north. This pragmatic and strict atmosphere, although it affected the enthusiasm of the banquet, made Zhang Ji directly feel the difference between the northern officialdom and the southern officialdom.

After the banquet, Hua Tuo accompanied Zhang Ji to live in the house specially prepared for him by Liu He in Jicheng, although this house does not occupy a wide area, but it is close to Hua Tuo's residence, and it is not too far from Youyan Academy and Yenching University, which is very suitable for scholars like Zhang Ji who do not have high requirements for material life, but like seclusion. There were only two clever scholars in the house, who were fifteen or sixteen years old. There was also a groom and a cook. As for the guards, there is no need to arrange them at all, because the whole of this large area of streets and alleys is under the strictest protection. If outsiders want to get in, it is only more difficult than climbing to the sky.

After Hua Tuo sent Zhang Ji to the place, he said goodbye and said, "Brother Zhongjing, you have a good night's rest today." I'll pick you up tomorrow morning, let's go to Yenching University and Youyan Academy to take a closer look. ”

Zhang Ji was still immersed in all kinds of novelties and anecdotes that had come to him that day, but he heard the scholar remind him in his ear: "Sir." The hot water for the bath is ready, and it's in the bathroom in the backyard, do you need a bath? ”

The cook also asked, "Sir, what would you like to eat for tomorrow morning's meal?" There are bean juice, millet porridge, cereal porridge, braised beef, cold amaranth, boiled eggs, goat milk tea, and ......"

Just a few simple questions, but it suddenly gave Zhang Ji a warm feeling of going home. He knew that these must have been Liu He's arrangements, and it was rare for this great general to be so meticulous in his thoughts.

After Zhang Ji bathed, he was not sleepy for a while, so he walked into the study. In the neat and clean study, there is a soothing sandalwood, and a set of furniture with Liu's characteristics is placed in a staggered manner. Zhang Ji slowly sat into the comfortable officer's hat chair, and saw a stack of pages printed with dense black square words neatly stacked at one end of the wide desk, so he picked up the top one.

"Dahan Times, special issue for epidemic prevention." Zhang Ji read silently, and then he was reluctant to put down the newspaper until he browsed all the issues of the "Dahan Times" since its inception, and then he leaned his back back on the back of the chair.

"General, what a genius is really heavenly! In this troubled era of crisis, it is fortunate that the Han can have a great general to save the general. Zhang Ji whispered to himself, and then leaned back in the chair and fell asleep.

Outside the study, the two scholars, who had never slept all along, heard a slight snoring coming from inside the room, so they walked away lightly.

"Chen Feng, do you want us to cover Mr. Zhang with a blanket, he is easy to catch a cold when he falls asleep like this."

"Wait a little longer, let Mr. Zhang sit and sleep first, and when his sleepiness is over, you still have to call him to go to the bedroom to sleep."

On the morning of the second day, Hua Tuo came by car, and Zhang Ji, who had recovered his spirits, happily traveled to see the prosperity of Jicheng.

The carriage passed through the streets, and soon arrived outside the main gate of Yenching University. The guard in charge of guarding the school gate stretched out his arm to stop the carriage, and Hua Tuo took out a pure gold medal from his arms and handed it to the guard from the window. When the guards saw this sign, they immediately saluted Hua Tuo, and then lifted the railing to let Hua Tuo's carriage enter the school gate.

"Yenching University now has 5,000 students enrolled, the school's management is extremely strict, usually it is strictly forbidden for irrelevant people to enter and exit, only on weekends, it will be open to the public, so that visitors can visit the Star Picking Tower, fencing hall, Keju field and other public venues." Hua Tuo patiently introduced Zhang Ji until the carriage came to the door of the medical school.

"Brother Zhang, today I will take you on a tour of the medical school. To be honest, I also concurrently serve as a priest in the medical school, and I have a few apprentices who are not successful. He also served as a professor in the college. ”

"Hehe, Brother Hua is humble. Looking at the entire Han Dynasty, where can there be such a good place to study medicine, the general let you be the head of the medical school, which is enough to prove Brother Hua's talent and prestige. ”

Hua Tuo took Zhang Ji to the teaching area of the medical school first, there were many classes in which classes were being held, Zhang Ji stood outside the window and listened for a while, and then nodded at Hua Tuo silently. Hua Tuo took Zhang Ji to visit the real yàn area, and as soon as he entered the main entrance of the real yàn building, he saw eight strong and powerful characters written on the large screen at the bottom of the building: "rigorous, truth-seeking, erudition, innovation".

This is Taifu's handwritten inscription. It is also the motto of our medical school. Hua Tuo proudly introduced to Zhang Ji.

"Brother Zhang, what you are going to see next may be beyond your imagination, no matter what you have any ideas, wait until we finish our visit, and then discuss it, I don't know if it's okay?" Hua Tuo began to give Zhang Ji a preventive shot.

Zhang Ji nodded, indicating that he would not spoil the quiet atmosphere of the real building.

Hua Tuo then took Zhang Ji to a room with the words "Herbarium Room" hanging on the door, and then gently pushed the door and motioned for Zhang Ji to enter and visit. Zhang Ji saw Hua Tuo so mysterious. Feeling a little tricky in his heart, he stepped in confidently. Then, he suddenly stopped his steps, and the whole person seemed to be frozen.

Two steps in front of Zhang Ji were two complete skeletons. One of them was taller and stouter, while the other was shorter and weaker. In addition to these two complete skeletons, there are many large and small compartments inside, which contain various human organs. I don't know how many corpses were used.

"Brother Zhang, these human specimens are all made from the corpses of death row prisoners. Half of them are still Hu people. Hua Tuo didn't wait for Zhang Ji to ask, so he hurriedly explained to him. In this era, it is about the deceased, and fiddling with the bodies of the dead on such a large scale is definitely an intolerable and incomprehensible thing in the eyes of ordinary people.

Zhang Ji recovered from the initial shock, and he asked Hua Tuo, "Why do you want to make so many specimens?" ”

"These specimens can enable students to understand the composition of the human body in the shortest possible time, and also allow them to see the internal connections of human organs, and at the same time, they are not afraid to touch the corpses of dead people, which is very helpful for their future medical care career." The medical school was founded at the expense of the general, and half of the doctors trained here had to serve in the army, so the requirements for surgery were very high. ”

"What is surgery?"

"This is a new division of medical science in medical school, and we believe that the way of medical technology should be specialized and classified, including surgery, internal medicine, gynecology, pediatrics, infectious diseases and cardiology, etc., and you will see these specific subspecialties later."

Zhang Ji didn't want to stay in the lifeless specimen room for longer, so he just hurriedly turned around and walked to the observation room next to him.

"May I ask Brother Hua, what is this observation room for?"

"Brother Zhang moved to this observation platform, look at this instrument, we call it a microscope, this is the treasure of our medical school! The purpose of the microscope is to magnify the tiny objects that our eyes cannot see clearly, and to clearly present them under our eyes through the magnification of the crystal pieces......"

As early as the first century B.C., it was discovered that a spherical transparent object could be magnified when a tiny object was observed. Later, I gradually realized that the spherical glass surface can magnify the image of objects. By 1590, Dutch and Italian spectacle makers had already created magnifying instruments similar to microscopes. Around 1610, Galileo Galilei in Italy and Kepler in Germany changed the distance between the objective lens and the eyepiece while studying the telescope to obtain a reasonable microscope optical path structure, and the optical craftsmen at that time were engaged in the manufacture, promotion and improvement of microscopes.

In the middle of the 17th century, Robert? Both Hooke and Leeuwenhoek in the Netherlands made outstanding contributions to the development of microscopy. Around 1665, Hooke incorporated coarse and micro-motion focusing mechanisms, illumination systems, and a workbench to carry specimens. These components have been continuously improved and become a fundamental part of modern microscopes.

Between 1673 and 1677, Levin? Hooke made a single-element magnifying glass type of high-power microscope, nine of which have been preserved to posterity. Hook and Levin? Using a self-made microscope, Hooke has made outstanding achievements in the study of the microstructure of animal and plant organisms.

Since Liu He was able to make a telescope from high-purity crystal sheets, he was also able to tinker with a classical optical microscope. Although the magnification is limited, some large microorganisms can already be observed through the lens. (To be continued......)