The real source of the coffin is hard to find, and the inventor has no historical records at all. The coffin probably came from the most basic initial state of the Neolithic Age. At that time, it belonged to primitive society, fighting fierce birds and beasts for living space. At that time, human beings actually had no advantages, coupled with low productivity and short life span, and people were thrown into the wilderness first after death.
Later, because I couldn't bear to see my companion's body being eaten and destroyed by wild animals, and I couldn't bear to see the bones exposed to nature, I dug a pit and buried the body underground. In order to prevent the destruction of insects, I wrapped a straw bag outside the body. This is the most primitive coffin. Later it developed into wooden coffins, as well as sarcophagi and bronze coffins. Wooden coffins are the most common, and eventually the coffins become the beds of the dead. Because of musheng, the ancients said that a corpse can be turned into a fairy, and it needs to be alive to maintain the body.
In fact, the original meaning of the coffin is to protect the body and prevent it from being destroyed. Later, it evolved into ostentation and superstition. In slave society and feudal society, coffins are regarded as a symbol of pursuing immortality and identity. Putting the body in the coffin is actually to protect the body. Later it gradually evolved into other meanings. The spread of ghost culture is the definition of early feudal society by slave society.
In general, coffins can't be made of any metal. Of course, special cases like bronze coffins are rare. Under abnormal circumstances, normal wooden coffins cannot be made of metal. There is no metal nail in the whole coffin, and it is completely bonded with mortise and tenon structure. Even if the final conclusion is made after collection, it is basically sealed with glue and wax, and the coffin lid is not fixed with metal nails.
After closing the coffin, tie the lid with rattan and bamboo to prevent it from falling off. Usually tied horizontally for three times, once in front, once in the middle and once in the back, and then buried at the funeral counter. Only in some special circumstances will metal nails be used, such as some very dead people, who are regarded as unlucky people and need metal nails to cover them. In fact, it is the traditional method of suppressing evil spirits and gathering qi. Metal nails are used because they are sharp weapons and have the function of sealing ghosts.
Another situation is to use nails, which is a problem of local customs. In some places, seven nails are nailed to the coffin lid before burial. The first nail must be nailed by a family member, followed by a special person, and only seven nails were nailed, which means that the descendants of Zefu. This custom actually exists in some areas. In most areas, metal nails are not used in coffins, and there are sharp tools in coffin beds, which is disrespectful to the dead.
Stupid! Stupid! Stupid! This is just a very simple and obvious truth! Since this simple question is traced back to the source, it involves the history of human development. From the earliest primitive times, a son only knew his mother, not his father! At that time, it was basically a matrilineal social family. Because the human brain evolves slowly, it only knows how to eat and live. If a group of people die, no one will consider it. With the development of productive forces and social progress, we have stepped into a slave society, and with class, people's thoughts have become much more civilized. The ruling class began to establish cities and fixed assets, resulting in oppression and exploitation. All kinds of new things in society are understood by human wisdom. The natural phenomenon of people dying of old age is also related to the living, and people should have a home after death. At this point, a series of problems have arisen in people's minds. Wear clothes, live in a coffin (house), and choose a land of feng shui. Bury. Later sacrifice, mourning! This is the progress of human thought and culture in evolution! The development history of Chinese civilization for thousands of years is a witness to the continuous improvement of people's thinking and wisdom. Putting people in coffins and then burying them in the soil is the best comfort for the living! As for the idea of nailing the cover nail after burial, as far as I understand, it is to strengthen the firmness of the dead house. There may also be an auspicious saying passed down from ancient times. ) In some areas, there are customs of hanging coffins and water burial. This is a form of mourning for the dead by the living. There is also a profound truth in this. It's just that people in our time know too little!
It was handed down by the ancients and became a custom followed by later generations. Handed down and became the basis for people to follow.
No nails?
Directly cover it? Through the gravity of the lid?
Buried in the ground, the lid moves as soon as it rains, and over time the body is not in the coffin.