Are there really ancient swords and knives that have been passed down to this day that are sharper than today's knives?

There are good things about traditional Chinese culture, but it can be understood and needs to be learned, not infinite yy.

Not only do the ancient ones lose their quality, but the new ones can't compare to modern products.

Bronze sword ...... know what is bronze? A copper-tin alloy. Because of the monolithic copper soft, adding the right amount of tin will increase the hardness, corrosion resistance, shiny as new is also gray.

Why did the bronze sword exit the stage of history? Because with the progress of smelting technology, people can refine iron, iron sword cut bronze very easily.

As for modern times, many materials are no longer manually processed, cutting iron is like mud, how to cut bronze?

That what coating, there has been no reliable news. It's all just a bunch of loosey-goosey journalists talking out of their asses. There is said to be coated, there is said to be electroplated, and metallurgy is not adjacent. Also made up of Germany a year, the United States a year patents.

The reason for the detection of certain ingredients is that the ancients liked to use strange and bizarre liquids to dip into the fire, such as the Damascus sword, to be inserted into the body of the bravest slave to dip into the fire.