Why did copper coins in ancient times have an eye?

Hehe, this is actually because the ancient coinage conditions are relatively backward, the outside is round, in order to process copper coins, it must be fixed, at that time it was fixed with square wood through the square hole in the middle.

Of course, the saying that the sky is round and the place is round was also extended later, but the order must be correct.

Although there was no reward, I answered.

It means that the sky is round and the place is round, the surroundings are round, and the middle is square, which is the meaning.

Why does the copper coin adopt the unique form of inner square and outer circle? There are two versions in history. First, it is a manifestation of the idea of imperial power and the domination of the world.

The ancients believed that the sky is round and the place is round, so this cosmology is reflected in the form of the money system, the outer circle is like the sky, the inner side is like the earth, and the heaven and the earth are contained in a coin, symbolizing the king of all directions and the unification of all universes, so Qin Shi Huang chose this shape for the unified currency. The second is convenience, the reason why the shape of the square hole round coin is used is for the convenience of casting. Round coins are easy to carry around and reduce wear and tear in circulation.

After the round money is cast, the surrounding file must be neatly repaired, and the file is time-consuming to repair one by one, so the craftsman will open a square hole in the money, so that a number of round coins will be repaired together with a stick, and the copper money will not rotate back and forth and improve the work efficiency.

Ancient metal coins were still more suitable for the financial circulation market. First of all, it is small in size, which avoids the instability of previous shell coins, gold coins, cloth coins, etc., and the destructive power of impacting the market is very small; It can be used repeatedly, especially in the longer reigning era names, which are becoming more and more important; Third, the shape is easy to carry, and it can be worn in a string and placed in the bag; Fourth, it is easy to exchange, because it is rarely in danger of depreciation, so many ancient silver bank cash cabinets will buy it.

The above points are purely personal opinions, and I hope to point out the inaccuracies!

To facilitate it to tie it up with a rope.

Wear a rope, there are 1,000 copper coins for a hanging penny.

It is good to wear rope and reduce the material

There are two kinds of ancient coins, one is the square hole round coin, the other is the round hole round coin, and there are four first-class coins in the subdivision.

Money Eye? It should be perforated, generally square and round. Generally, the copper coins issued by ** are mostly worn squarely, and the money is relatively more. This is shown in the figure below.

Square wear round wear.