Why are many excellent ancient crafts lost?

Many crafts in the Jianghu pay attention to genre inheritance and are relatively closed. At the same time, they have the problem of doing everything in one hand. Just like cross talk, the apprentice rate is low, the income is low, but the career change rate is high. When the older generation is gone, once no one teaches no one to learn and no one will spend money to listen, then these skills will gradually disappear.

Wushu was really useful in the era of cold weapons, but since the appearance of hot weapons, such as guns, Wushu has gradually come to an end. After all, no matter how strong a player is, he can't compare with a pistol. So martial arts has become a gesture and aerobics.

In the past, doctors and witches were inseparable. Later, after the emergence of Confucianism, most Confucian scholars lived in seclusion, either writing books or practicing medicine. They don't believe in witchcraft, saying that it is Machamp's chaotic god. Doctors had a low status in ancient times, but they were more educated than ordinary people, and they could tell stories and make up stories. First of all, they invented a minister named Zeebe around the Yellow Emperor, and the Yellow Emperor also asked him for medical advice, so there was Huangdi Neijing. Also fabricated Shennong to taste a hundred herbs. It is also combined with Taoism, so that many famous doctors in ancient times learned medical skills from immortals, so that some people have perspective eyes and some people are immortals, so ancient medical skills should not be too superstitious. Besides, Qin Shihuang didn't burn medical books when he burned books.

Yin-yang and Five Elements are the theory of alchemists, which was also believed by emperors in past dynasties, and can still be seen in national sacrifices and sacrifices.

As for burning books at other times, there are various reasons. For example, writing a book about the Qing Dynasty and remembering the Ming Dynasty, and calling the Eight Banners bandits or tartars, is definitely not acceptable. Teaching obscenity and thieves is definitely not good. Others are joint and several liability. For example, the Qing Dynasty seized a book written by a man named Jin Bao, and all writers related to him were also banned.