Yuan Tiangang, who was concentrating on drinking soup, was frightened by Li Yan's throat and almost drank the soup into his trachea. When he used a towel to dry the soup on his beard, he saw Li Yan stand up, walked quickly to the wall, reached out to wipe the place on the wall that was blackened by candles, and then ran back with a look of surprise.

"Please look at Taoist Master Yuan. If I remember correctly, adding this thing to the gum should increase the wear resistance of the gum!" Li Yan held up his black palm and said to Yuan Tiangang excitedly.

"Oil black?" Yuan Tiangang looked at Li Yan in confusion. He knew that this thing could make ink, but he really didn't expect that this thing could be added with gum.

"That's right, this thing can be called carbon black. When you make gum, don't you add sulfur or something? The same is true for carbon black, but the amount required is relatively large. I don't know very well how much. You can do the experiment by yourself!" Li Yan thanked the bald chemistry teacher from the bottom of his heart, and thanked that he finally remembered something useful under his rigorous education. Yuan Tiangang was very convinced of Li Yan and said that he would definitely use this thing to experiment.

After dinner, Li Yan arranged for Yuan Tiangang to stay in the mansion. The next morning, he and Yuan Tiangang rushed to the Duke of Wei's mansion and first handled what he promised Li Yexu yesterday. However, Li Yan obviously underestimated Li Jing's stubbornness. Even after hearing Yuan Tiangang's explanation, he still refused to let Li Yexu enter the military academy. Now Li Yan's donkey temper also came up. When he saw that he couldn't speak, he simply went to the palace to ask Li Shimin. As a result, Li Shimin came forward and talked secretly with Li Jing in the study room for a long time. Then he moved the other party, but since then, Li Jing's eyes looked at Li Yan a little strange.

Li Yan spent the whole August busy. After a Mid-Autumn Festival, it was soon September. The foundation of the military academy had been laid and the main project construction began. In addition, not far from the military academy, the Datang Medical College, with Sun Simiao as the principal, also began to break ground.

However, compared to the grand scale of the military academy, medical colleges are much more stingy. It’s not that Li Shimin and others do not value medicine, but in comparison, medical colleges are not urgently needed by the Tang Dynasty now, so the Chinese civil and military officials in the court don’t want to allocate funds. Fortunately, Li Yan also has the ace of medical soldiers. He played the sign of cultivating medical soldiers for the Tang army and finally passed the budget for the medical college, but the allocation was not much.

Li Yan sneered at the short-sightedness of Li Shimin and the civil and military officials of the court. It doesn’t matter if they are unwilling to pay, but he doesn’t need that little money anyway. So he added nearly twice the amount of funds based on the grants from the court. However, these funds are specifically used to cultivate private medical talents and teach them separately from medical soldiers.

As for Yuan Tiangang's Taoist Academy, Li Yan couldn't help but worry. The other party was taking a group of Taoist priests around Chang'an to choose a beautiful courtyard for the Taoist Academy. Because of Li Yan's reminder, Yuan Tiangang and a group of alchemy Taoist priests added carbon black to the gum, which greatly increased the wear resistance of the gum. Now there is only one suitable formula left. This is only a matter of time, so the Taoist priest has begun preparations in advance.

All three colleges are related to Li Yan, and even all and half of the medical colleges of Taoism must be funded by him. Although in his opinion, as long as the college can be built, no matter how much money it costs, it caused Xijun to be extremely dissatisfied. In her words, the money was all for her future son, and even Li Yan, a father, could not spend his son's money indiscriminately!

In short, Xijun has been pregnant for more than three months. The initial dangerous period has passed, and her lower abdomen is obviously bulging. When I walk in the garden, I have a group of maids and mothers to serve me. This is not Xijun's spoiledness, but Wen Xin, as a princess, has a life of life. No matter where Xijun is, she must have at least four maids to accompany her, for fear that the child will make any mistakes.

Compared to Xijun, a pregnant woman who is less than 20 years old, Yang Fei, who is in her thirties, is an absolute old woman. The delivery date is September. Whether it is Li Shimin, Li Ke and Li Yan, they naturally attach great importance to the matter that concerns the lives of Yang Fei and his son. No matter how busy Li Shimin is, he will take some time to spend every day with Yang Fei. As for the brothers Li Ke and Li Yan, as long as there is nothing important, he stays in Wangyun Palace almost all day.

However, Li Yan was not idle. Concubine Yang was one of the four concubines. Delivery was naturally a big deal in the palace, so the delivery pavilion used for delivery was prepared early. However, when Li Yan saw the delivery pavilion, he was angry and angry. Because ancient medicine was underdeveloped and feudal superstitious ideas, there were many taboos when mothers gave birth, such as not being able to take sharp things, not being able to listen to metal sounds, not being able to see the wind and light, etc.

It’s okay if the others are nothing, but Li Yan can’t figure out why the mother cannot see the light? Because of this taboo, the entire delivery cabinet is airtight, and the windows are all sealed, and the room is pitch black. You have to light a light to see the situation inside.

Although Li Yan did not understand women's childbirth, he still knew basic medical knowledge. The childbirth was prepared when Yang Fei was seven months pregnant. During this period, the whole room was not light or ventilated. You can imagine how many bacteria and viruses would breed inside. When a woman gave birth in such a house, the risk of infection was naturally greater.

It was also the experience of this delivery cabinet that Li Yan had deep doubts about the delivery technology of the Tang Dynasty. Fortunately, there was still some time before Yang Fei gave birth, so he simply brought the delivery woman to ask her to tell herself about the delivery process.

The surname of Wenpo, who delivered Yang Fei, is over 60 years old this year. I heard that he has been in the industry for nearly forty years and is the royal Wenpo in the palace. Most of the brothers and sisters such as Li Yan delivered the baby, and even Li Yan was no exception. Because of this, both the palace ladies and the concubines respect him very much.

Grandma Liu heard Li Yan’s strange request at first, so she naturally refused to agree. After all, in this era, women’s childbirth is very unclean and taboo, and men are not allowed to participate, let alone inquiring as openly as Li Yan.

However, for the safety of Concubine Yang and his son, Li Yan gritted the bullet and suppressed others with his identity. Finally, Grandma Liu told Grandma Liu to explain the process of delivering a baby. As a result, when he heard it, he was scared to his whole body, because Grandma Liu's delivery process was simply a mixture of medical skills and witchcraft. He had to worship the bed god during delivery. There were many inexplicable links in the process, and some of them could not even be explained clearly by Grandma Liu himself. He only said that the master taught this, and it was all the things of the ancestors. There would definitely be no mistake!

Now Li Yan could no longer sit still. He brought Sun Simiao back from the construction site of the medical school, and found a group of doctors who were proficient in gynecology, a dozen or so-called gangsters who were as proficient in delivering babies as Liu, as well as several doctors who were responsible for taking care of pregnant women's bodies, and a group of mixed people formed a delivery technology assault team. In the most period of time, he developed a delivery technology that met the medical and hygiene conditions of later generations.

However, during the process of studying delivery technology, I don’t know who caused this incident to Li Shimin. Although Li Shimin loved Li Yan very much, it was related to the lives of Concubine Yang and the children, so Li Yan could not make him mess up, so he criticized him fiercely. Fortunately, Concubine Yang knew that his son would definitely not harm him, so she was very supportive of him and personally persuaded Li Shimin. With the guarantee of Sun Simiao and his doctors, he finally agreed to Li Yan to continue to study the new delivery technology.

It is precisely because of Yang Fei's support that the new delivery technology has been researched very smoothly, and several stable women also used this technology to deliver the baby to women outside the uterus, which greatly reduced the risk and even allowed several pregnant women with difficult labor to give birth to a fetus smoothly.

With these living examples, coupled with Yang Fei's persuasion, Li Shimin finally agreed to let Yang Fei use the new delivery technology, and also assured Sun Simiao and others that as long as Yang Fei gave birth to a child successfully, the court would vigorously promote this technology, and all personnel who studied delivery technology would also receive heavy commendations.

With Li Shimin's guarantee, not only did Li Yan let go, but Sun Simiao and others in the delivery team were also very excited and were full of energy. The sealed delivery pavilion was opened, and the windows were all filled with glass by Li Yan, which became bright and ventilated. The whole house was sprinkled with quicklime. If it weren't for the great stimulation of alcohol, Li Yan would have wanted to soak the whole house in alcohol several times.

As for the equipment used for delivery, they are all subject to high-temperature anti-virus and then soaked in alcohol. The Stable Woman, who is responsible for delivery, must also maintain hygiene. Especially during the days when Yang Fei was about to give birth, Grandma Liu and the others had to wash their hands almost everything, and sometimes even disinfect them with alcohol, which caused a lot of trouble for the older ones.

Just when Li Yan, the brother who was preparing everything, the little guy in Yang Fei's belly, who was not sure whether it was his younger brother or younger sister, finally became impatient.

At noon on September 28, the 12th year of Zhenguan, Li Yan and Li Ke were playing chess with Yang Fei. Yang Fei had the best chess skills, but because of her pregnancy, Sun Simiao told her not to let her worry, so she played a few games and let her two sons play, while she watched the game aside.

Li Yan was a chess chess player and was no match for Li Ke at all. He lost seven or eight games in a row. In the last game, he finally had hope of winning. However, Yang Fei's stomach reacted. At first, it was a slight pain, and slowly the pain became more and more severe. The doctors who were prepared around him immediately asked him to carry Yang Fei into the delivery room. Grandma Liu and a group of stable women were immediately taken to the position. Sun Simiao and other doctors with excellent medical skills were also waiting outside the delivery room.

When Li Shimin rushed over from the front hall, all the staff were already in place and were waiting to welcome the birth of a new member of the royal family.
Chapter completed!