After vaccination, the human body has the ability to be immune to smallpox. Smallpox is an ancient disease that has been passed down, with countless deaths and a population killer. If this disease can be prevented, it will have an immeasurable effect on the increase in the population of the Han Dynasty.

Zhou Yang briefly sorted out his ideas and explained them to Mr. Cang. The acne vaccination technology has a huge effect and has saved hundreds of millions of lives. It is called the "fifth largest invention" in China except for the four major inventions. However, its technology is not difficult. One by one, Mr. Cang and Emperor Jing stared at the top of their eyes.

Zhou Yang is not talking about human acne technology, but vowel technology. Human acne technology is not as safe as vowel, which is his flaw. What appeared in the Northern Song Dynasty was human acne technology, which has been used for thousands of years.

European emperors specially sent people to China to study, and then they were introduced to Europe. Finally, the British developed cowpox technology based on human acne, and human acne technology left the stage of history.

"Use cow scabs? Can this work?" Emperor Jing was a little disbelief.

Mr. Cang also shook his head: "Don't it work?"

"Mr. Cang, you are a famous miracle doctor in the world. Do you know that those farmers who are with cattle all day long will no longer be afraid of epidemics once they are infected with cow scabs?" Zhou Yang smiled slightly.

"Bang!" Kuraku only felt a flash of inspiration, and a brand new world appeared in front of him. He slapped his forehead heavily, and stood up excitedly and said, "Yes! Yes! I have discovered such a thing before, but I didn't think deeply about it. Fortunately, the general reminded him that this matter was done!"

The reason why the vowel technology was invented was that some people discovered that once the milking person was infected, they would no longer be afraid of smallpox.

In the Han Dynasty, there were cattle. Farmers had more time to deal with cattle. After being infected, they were not afraid of smallpox. They were everywhere. Zhou Yang was not afraid of being in trouble at all.

"Mr. Cang, you can do this!" Emperor Jing saw Mr. Cang's excited look in his eyes, and was very relieved.

As long as the population increases, the Han Dynasty will become stronger.

Zhou Yang talked about some knowledge about epidemics, and Mr. Cang's eyes lit up when he heard it. If Zhou Yang hadn't said it long ago, he was a foreigner, Mr. Cang would definitely call Zhou Yang a good doctor.

This explanation took a long time to explain, and Kurakuro left satisfied.

"Zhou Yang, Zhou Yang, how do you have a brain? You even know medical skills." Emperor Jing looked at Zhou Yang with a smile. Every time he saw Zhou Yang, he would always surprise him.

"Your Majesty, I don't know how to understand the medical skills, I just remember it." Zhou Yang was busy lying: "Your Majesty knows it, I have the ability to remember everything I see."

"Yeah!" After saying this, it was reasonable. Emperor Jing nodded slightly and said, "I just don't know the name of the strange man's surname Gao?"

"The emperor doesn't know anything, he doesn't want to say it, and I don't know it." Zhou Yang didn't blush when he lied.

"Zhou Yang, why don't you mention military use?" Emperor Jing looked at Zhou Yang and suddenly asked.

Now, Baiyue has been recovered, the threat from the Han Dynasty to the south has been lifted, and it is possible to use troops against the Huns. Although the 30,000 new troops are too few, you can fight and train.

Before Zhou Yang could speak, Emperor Jing continued, "Don't mention the matter of using troops. Let's go to Changxin Palace and you will understand."
Chapter completed!