After the summary meeting, a small meeting was held to discuss how to fight Jiannu with the sentinel as a unit.

During this time, Li Jing mainly focused on the treatment of wounded soldiers. More than 1,000 Youyang soldiers were wounded, and 50 or 60 Mao soldiers were wounded. More than 600 Jiannu prisoners were captured, half of whom were wounded.

At present, there are not many means that can be used, although the South Australian Maritime College has opened a medical school, but after all, the grass is created, and the teachers and students are not complete. This piece of Li Jing is ready to learn in the war.

Fortunately, the weather is cold, the wound is not easy to inflame, in the camp at Yingkou, there is a special operating room, the existing surgeons are two knives, many people are butchers before joining the army, Li Jing really has no choice, many people dare not start, only the butchers are not stingy, recruited more than a dozen young men from the butcher family, fixed the wounded with special beds, and disinfected all kinds of sharp knives with alcohol, and dared to disembowel. Conservative treatment was used as much as possible, but the critically ill patients who died without surgery were also treated as live horse doctors, and his officers were asked to sign them, and then the surgery was carried out. If you die, you should accumulate experience.

The wounds of all the wounded were opened and cleaned with alcohol, and some of them did not pull out the arrows, but only cut the shafts of the arrows, and the screams in the wounded barracks and in the operating room were terrifying, and there was no anesthetic. It's not that Li Jing doesn't know the formula of anesthetics. The main reason is that he was too busy to forget about it, and ether, as a commonly used anesthetic, can be produced.

Ether is a volatile liquid, but it's not new. In fact, as early as 1275, the Spaniard Laris, discovered ether. In 1540, the Prussian Kodas invented the synthesis method of ether. Around the same time, a doctor in Switzerland discovered that ether had a hypnotic effect.

Ether anesthesia is one of the methods of inhalation general anesthesia. Ether is a colorless volatile liquid and was the first general anesthetic to be used (1846). It has strong anesthetic efficacy, wide safety range, and good muscle relaxation effect. However, anesthesia induction and awakening are delayed, and its special irritating odor makes it difficult for patients to accept, and the incidence of postoperative nausea, vomiting and intestinal paralysis is high, and it is easy to burn and explode. Beside oneself. It must be guided by a professional to apply.

Li Jing's chemical knowledge has not yet been returned to the teacher, and he remembers that ether is made in the laboratory: when ethanol and concentrated sulfuric acid compounds are heated to 140 °C, intermolecular dehydration can occur to form the product ether. Starch-rich agricultural products such as cereals, potatoes, etc. or wild plant fruits are washed and crushed, and then cooked under pressure to make the starch gelatinized, and then an appropriate amount of water is added, cooled to about 60 °C and amylase is added to hydrolyze the starch into maltose and glucose in turn. Ethanol is then fermented by adding enzyme bacteria.

Listening to the screams of the wounded soldiers, Li Jing decided that he could not let the hero shed blood and tears, and he found a temporary method of "hypnosis"

The patient, lying on a metal stretcher bed, awake and quiet, took a deep breath and counted out loud: "100!" Go to bed; 99！ Go to bed; 98 .” When a certain number is counted, all the words and numbers disappear and everything fades away. After a few minutes, he was fully hypnotized and pushed into the operating room. Stay there for a full 30 minutes. During the whole process, there was no anesthesiologist and no pain in the patient was seen at all.

The world has finally quieted down, and hypnosis has proven to be effective for the vast majority of patients.

After retreating the wounds and using the white powder wound medicine made with Tian Qi as the main raw material, the vast majority of the wounded soldiers improved, and of course some had no effect or even worsened. Li Jing can't help it, because he is not a medical student, and he is a second knife himself.

Ran Tianyi is like a fart, like a little tail, wherever Li Jing goes, wherever he goes, Li Jing is depressed, my brother is a person who has a girlfriend, sister, my girlfriend won't care about you like this. But I think that these two are ruthless stubble, and once they meet, I'm afraid that Mars will hit the earth. Li Jing couldn't help but shudder.

In fact, it was mainly Ran Tianyi pestering him to ask for an Arabian horse. Li Jing didn't give it.

On this day, the news came, Sakhalian was defeated, lost his teacher and humiliated the country and was imprisoned, it is said that in prison Sakhalian still continued to learn, has been summing up the experience of this battle, gains and losses, and finally Huang Taiji desperately saved him.

Li Jing sighed, it is gold that will shine sooner or later, and this fiasco is not a hardship and hardship. The biggest adviser behind the scenes of Huang Taiji has already begun to embark on his own path. And Huang Taiji, who has a discerning eye for heroes, has also embarked on his road to winning the heir.

"Report, Chen Chong, an engineering technician at the Nanao Island Shipyard, asked to meet." The guard outside the door came in to report.

"Well, why is Chen Zhong here, hasn't he been busy studying the keel deformation of the wooden ship recently, is there a result?" Li Jing muttered to himself.

In the reception room, Chen Zhong was a little restrained, and he only dared to sit on half of the chair. He is reporting the latest research progress with Li Jing.

"I found out that the real reason for the keel deformation was the uneven buoyancy of the ship"

"Well, that's interesting, let's talk about it in detail." Li Jing asked with great interest.

"In fact, it is easy to understand that the shape of the wooden boats is similar, in order to reduce resistance, the bow and tail are pointed, and in order to increase the volume of the cabin, the middle part is relatively wide. This created a problem that the displacement of the middle hull was so large that there was excess buoyancy, while the bow and stern had little buoyancy and insufficient buoyancy. The guns on the gun deck and other loads were evenly pressed on the entire ship. As a result, the keel at the bow and stern of the ship is bent downward due to insufficient buoyancy, and the keel is bent upward due to excess buoyancy in the middle of the ship. Chen Zhong said seriously, although he still looks very young, but the study of theory and practice has led to the brilliance of confidence on his young face. Li Jing sighed, it is said that knowledge changes fate, and even temperament can change, Chen Chong already has the demeanor of some experts and scholars.

"Well, it makes sense, this direction is right, in addition to the wavy bending up and down, the keel will also bend horizontally and left and right, and even deform and bend in three dimensions. What do you think of this?" Li Jing then asked a more difficult question. These questions also bothered Li Jing.

"The hull of the ship under water is subjected to pressure from all sides of the water, and this pressure is inward in reverse, while the mast of the ship is fixed and riveted to the keel, and then penetrates upwards through the multiple decks, and is riveted to the longitudinal and horizontal crossbeams that work overtime on each floor. The principle of sailboat propulsion is that the wind blows the sail to form thrust, and the sail transmits the thrust to the mast, and the mast conducts it to the keel to propel the ship forward. In this case, the mast will shake and deform in all directions when it is blown by the wind, and this deformation is a disordered movement in all directions with uneven forces and irregular direction, because the wind is orderly and disorderly. In this way, the mast causes the superstructure of the ship to be subjected to a force that scatters flowers in all directions, in addition to the blowing of the wind. This force acts on both the water and the underwater, generally speaking, in the horizontal direction or even in the three-dimensional direction, the inside and outside are dislocated from each other, resulting in the horizontal twisting of the keel, the boat is not moving on a plane, but bullying under the waves, so that the force scattered on all sides of the horizontal direction will cause a twist with a certain angle, which is the reason for the twisting of the keel in the three-dimensional direction. After speaking, he let out a sigh of relief and looked at Li Jing calmly.

Li Jing knew that judging from his industrial knowledge, this explanation was very reasonable. The due is the real reason for the twisting of the keel.

"Do you have any way to solve this problem, if this problem is not solved, the life of the battleship will not exceed fifteen years, or even ten years, which will cause huge military expenditures."

"I only thought of a way, but I need your support to make it happen," Chen said slowly.