There are many of them, and there is no inn in the city that can accommodate so many of them. Their previous solution was to find the largest courtyard in the city and borrow it temporarily. Of course, it's for money.

Now, they also came to the house of the richest man in the county, and as usual, they borrowed it as Yang Kang. Yang Kang is now a military attache of the fourth grade, and this identity is not trivial.

When the rich men saw the arrival of the court officials, they happily vacated the space for them to borrow and feasted them warmly.

At the banquet, Li Su saw several servants, including the master's wife and children, all with swollen necks, obviously suffering from big neck disease. Li Su remembered that when he entered Nanyang, he also met a few such patients on the way.

Li Su asked, "Mr. Liu, what's wrong with your wife and child's neck?" ”

The owner of this house, surnamed Liu, said bitterly: "Don't hide it from the distinguished guests, this place in Nanyang is now making a strange disease, and people say that they have fallen into evil, and many people have this disease. ”

Li Su asked, "Isn't there anyone here who can cure this disease?" ”

Mr. Liu said: "Don't mention it, I have invited all the local Langzhong." Not only that, but I also invited Sun Simiao, a miracle doctor known as the world's first. He was also helpless. As he spoke, he shook his head with a dull look in his eyes.

Li Su's eyes lit up when he heard him mention Sun Simiao, and he asked, "Where is Old Immortal Sun now?" ”

Mr. Liu said: "This person is now in my guest room, saying that he is studying a cure. ”

Li Su said, "Can you please come and see me?" ”

Mr. Liu instructed: "Come on, go and invite Mr. Sun." The servant agreed. Soon Sun Simiao came.

Sun Simiao (541-682), a native of Jingzhaohuayuan (now Yaozhou District, Tongchuan City, Shaanxi Province), was a famous medical scientist and Taoist priest in the Tang Dynasty, and was respected as the "King of Medicine" by later generations.

In the seventh year of the reign of the Western Wei Dynasty (541), Sun Simiao was born in a poor peasant family. He was clever since he was a child, and was valued by his teachers, and when he grew up, he began to love the Taoist Lao Zhuang doctrine, and lived in seclusion in the mountains of Zhongnan in Shaanxi, and gradually gained a high reputation.

Sun Simiao attaches great importance to the medical experience of the people, constantly accumulates visits, records them in time, and finally completes his book "A Thousand Golden Prescriptions".

After the establishment of the Tang Dynasty, Sun Simiao accepted the invitation of the imperial court to cooperate with the government in medical activities. In 659, he completed the world's first national pharmacopoeia, Tang Xin Materia Medica. In 682, Sun Simiao died of illness.

Li Shimin respected Sun Simiao very much, and once wanted to grant him a knighthood, but he refused, he was used to it, and practiced medicine freely among the people.

Li Su saw that this person had a clear appearance, giving people an elegant bookish atmosphere, and his appearance looked only about 40 years old, but in fact he was 100 years old!

Li Su hurriedly stood up, saluted Sun Simiao, and said, "Chang'an Li Su, I have seen Sun Lao Immortal. ”

Sun Simiao saw that there was a strange young noble son in front of him, handsome, and he couldn't see his actual identity, but when he saw the momentum of his entourage, he knew that this person must be the son of a noble son of the imperial court.

Sun Simiao's current identity is a common man, although he is not afraid of the powerful, but people salute him sincerely, he does not dare to slack off, and bends down and says: "Don't dare to be, the grass people have seen Li Gongzi." ”

Li Su invited Sun Simiao to sit down and said, "Old immortal, are you longevity this year?" ”

Sun Simiao said with a gloomy expression: "Don't mention any immortal miracle doctor, I can't cure the disease in front of me, it's really a hundred years in vain." ”

Li Zhi asked curiously: "You look like you are only thirty or forty years old, how can you be a hundred years old." There was unbelief in the words.

In this era, sixty years old is a long life, and this is how the saying that life is rare for seventy years comes from.

Li Su said: "Doctor Sun doesn't have to blame himself, there are thousands of diseases in the world, a person's energy is limited, it is impossible to study all the diseases, you rely on your own diligence, hard work to study medical skills, has made great achievements, treated thousands of patients, and deserves the title of divine doctor!" ”

Sun Simiao listened to Li Su's sincerity, and his mood improved a lot, and he said: "Thank you Li Gongzi for your false praise." However, this time the symptoms occurred in a wide area, not only in Nanyang, but also in Kaifeng, Zhumadian, Xuchang, Luohe, Zhengzhou and other places. There are thousands of patients, but I can't do anything, it's heart-wrenching! ”

Li Su and others were very moved: Sun Simiao is really a kind person who worries about the country and the people!

Mr. Liu said: "When I was young, I was sick and couldn't have children, but I was unfortunately infected with such a strange disease, even Dr. Sun couldn't do it, it seems that God wants to make me the last one." As he spoke, he shed tears. It didn't matter if he cried, his wife and children wept too.

Soon, Li Su had figured out the cause of the disease in this area.

In the past, the salt people here ate was sea salt, which was high in iodine. Since the second half of last year, the Huai River flooded and the transportation of sea salt was blocked, and the imperial court brought a large amount of well salt from the northwest region.

Due to the large difference in iodine content between the two salts, it is difficult for people's bodies here to adapt all at once. As a result, there was a concentrated outbreak of this disease, which is known as "big neck disease".

Big neck disease, commonly known as goiter, is an endemic disease, mainly due to iodine deficiency, causing thyroid hyperplasia and enlargement, degenerative diseases. Children in severe areas present with endemic cretinism. Iodine is an essential trace element in the human body, and iodine in the human body exists in the form of compounds, which are essential components of thyroid hormones. The thyroid gland is an endocrine gland located on both sides of the larynx and trachea, and is composed of many sac-like vesicles, called thyroid follicles, which contain thyroglobulin (an iodine-containing protein that is gelatinous) and is the "iodine bank" in the human body. It has the function of secreting thyroid hormones. Once the hormone is needed by the body, it quickly hydrolyzes the synthesized thyroglobulin into biologically active thyroid hormones, which are transported through the blood circulation to tissues throughout the body. Iodine supplementation is very important.

Li Su said: "Mr. Liu, don't be sad, this disease is not an evil spirit, but an ordinary disease, and Li can cure it." ”

As soon as this statement came out, it was earth-shattering! Mr. Liu and his family immediately stopped crying.

The corners of Mr. Liu's mouth trembled and said, "Is this true? If Li Gongzi cures the child's illness, you are the great benefactor of my family, and Liu is willing to donate half of the family property to Li Gongzi! ”

After Mr. Liu said that he wanted to donate his family property, he pulled his family to bow down to Li Su, but Li Su hurriedly stopped him. said: "It doesn't have to be like this, it's just a trivial matter." ”