What inventions were made in the Three Kingdoms period at the end of Han Dynasty, and what influence did they have on later generations?

I am deeply impressed by five major inventions: Hua Tuo's general anesthesia, Zhang Zhongjing's cardiopulmonary resuscitation, Liu Hui's cyclotomy, Bi Lan's waterwheel, and Zhong You's regular script.

1. Hua Tuo's general anesthesia

in medicine. There is a treatment method that is used in surgery all over the world-general anesthesia. We all know that the earliest use of anesthesia was Bian Que in the Spring and Autumn Period and the Warring States Period, but the records about him are actually a little too mythical. Hua Tuo's use of anesthetic Mafeisan, which appeared in the Three Kingdoms period, is clearly recorded and certainly more convincing. The emergence and application of anesthesia is tantamount to playing an irreplaceable role in advanced medical operations.

2. Zhang Zhongjing's cardiopulmonary resuscitation

This is a very common term in many medical work today, but it actually appeared in this period. He was initiated and respected by Zhang Zhongjing, a medical saint at the end of the Eastern Han Dynasty. This method of saving people from danger has a predictable impact on future generations, and it is as important as anesthesia.

Three: Liu Hui's Circumcision

Speaking of cyclotomy, we must know something about it when we study mathematics, and we will definitely remember Zu Chongzhi's invention of pi, but in fact, Liu Hui of Cao Wei was the founder of his discovery of pi before him. Moreover, Liu Hui also summed up the cyclotomy according to the relationship between the circle area and the polygon area inscribed in the circle, and his influence can be imagined, which played an important role in the history of mathematics.

Four: Bi Lan and Ma Jun's Waterwheel

Waterwheel, which can be seen everywhere in China, a big agricultural country, was created by a eunuch named Bi Lan at the end of the Eastern Han Dynasty. He was not only the inventor of Waterwheel, but also the father of Sprinkler.

However, another more famous figure in the Three Kingdoms related to waterwheels is the great mechanical inventor Ma Jun.. Although Bi Lan was indeed the inventor of the waterwheel, Ma Jun's improvement on rollover made his contribution in this respect far greater than Bi Lan's in the eyes of future generations.

five: Zhong You's regular script

Chinese calligraphy experienced an absolutely epoch-making progress in the Three Kingdoms period at the end of Han Dynasty, and this progress was the appearance of regular script, and the founder of this font is now considered as the father of Zhong Hui-Zhong You and Zhong You are the most outstanding calligraphers in the Three Kingdoms period. There are still a few remains of official script in his regular script, which shows that his historical position can be confirmed. After the regular script was established, it became the standard of handwritten Chinese characters.

Although we can't say that these inventions that have been preserved until now are 1% perfect, and later generations are constantly improving, we have to say that the wisdom of the ancients is still strong, and their abilities and knowledge are amazing!