As the saying goes: the end of science is theology, and now that society is developed and science and technology are becoming more and more advanced, there are still many problems that experts cannot solve, and events that cannot be studied can only be replaced by "theology".
But any legend is not empty, in ancient times people are more faith, believe that everything in the world is related, both mutual birth, but also mutual control, just like the Tao is a foot high, the devil is tall, there is always a corresponding way, after all, one thing drops one thing.
In fact, the "dragon sword" is not a dragon, but a little similar to the dragon, likes to inhabit the rivers and lakes of an animal - jiao, so it is accurately called "slashing jiao sword".
Legend has it that after a thousand years of construction, jiao can become a dragon, so there are later dragons. But in ancient times, the jiao was called an ominous thing, because it always lurked around human life, such as ponds, rivers, lakes and other freshwater places, swinging its body when people were not prepared, opening its blood basin to sneak up on passing humans and livestock, and then using them as its own food. It alarms the people who live and work by the water's edge.
Because of the huge size of the jiao, there will always be a lot of water flow in the rivers and lakes it swims through, which is simply like a turbulent undercurrent, and the jiao likes the rainy season, especially when the rivers and lakes rise, the jiao is even more happy, so in the place where it is infested, the river floods, the people do not talk about life, and the people talk about the discoloration of the "jiao".
Legend has it that a "god man" at that time knew the evil deeds of Jiao, so he made a sword to subdue Jiao, and used this sword to suppress and deter Jiao's "gods".
Later, people knew and followed suit, inserting a sword under the bridge, it is strange to say that since the "god object" was hung, the height of the river water was no longer higher than the position of the sword tip, and the previous river rose, overturning the river and overturning the sea never happened again, and since then the "dragon sword" has been worshipped as a god by the people.
Since it is a "mythical thing", why does no one steal it? The reason is simple.
First, psychological factors, are afraid of anger and nerves, punished.
Second, in the existing "dragon sword" material, it is only made of ordinary materials, and the warp is hung under the bridge, the humidity is relatively large, many of them have been rusted or corroded and deformed, stolen and turned into slag, and can not buy a good price.
Third, the "dragon slashing sword" is generally hung in the middle of the bridge (the highest out) half is still inside the bridge, stealing it is very difficult and dangerous, and many ancient bridges have it, even if it is not a cultural relic, it is not worth risking.
As for the statement that experts dare not study it, it is pure nonsense, experts even dare to study the "Nine-Story Demon Tower", how can they not dare to study the "Dragon Slashing Sword".
But we still have to believe that the ancients still have their own reasons for doing things, as for what it is, everyone can think.