That video is real. Japanese knives are famous for their powerful cutting ability, but the target of chopping is an important factor to determine whether the mountain city is damaged or not. If you say it's like cutting iron, you can't expect to cut your nails. Sharp blade means thin blade, even if the hardness is higher, iron products with the same hardness will be damaged. To cut iron, there is only a half-open blade. Without it, the knife loses its sharpness.
What needs to be clear is that swords are consumables on the battlefield. Facing the enemy's weapons and armor, they will definitely be damaged and need to be re-polished, repaired and even replaced. What needs to be clear is that the target of the sword is the enemy's body, not nails, trees and other things.
The object of trial cutting in mountain cities is usually bamboo, which is wrapped in rolls of tatami (straw mats), and sometimes bamboo is wrapped in tatami to simulate human body and bones. When trying to cut these targets, the knife will not be damaged, unless the technique is wrong, and the knife shoots at the target like a stick, that is, the so-called knife rib is not straight, which may damage the blade.
There are many complicated manufacturing processes in the mountain city, such as Baotou steel, steel clamping and blade burning (such as armor forging and three-piece combination). ), but the domestic manufacturers are a dime a dozen, and the level is uneven. You should know more before you decide to buy. You can learn more about them in post bars, knife friends forums and other places, not only about knife dealers, but also about Japanese knives themselves.
In addition, there are two trends in Japanese knives now. One is that it is made according to the ancient Japanese law, and the blade structure is complex and antique; The other is a high-performance tool made of a single material according to modern steel technology, which can be selected according to your own preferences.