What kind of knife is a good knife?

It's an ancient knife from China, and its performance is quite good. * * * There are two main types. The first method is to use the hundred-steel-making method, using three pieces of pig iron specially used for forging, firing and fusing, repeatedly folding for 8 times, using water, blood, animal urine, burning soil and other substances. After the knife is quenched, the hardness of the knife varies with different substances. The second type is steel clamping method. There are five kinds of forging knives according to the steel clip method. The most common thing is to put the blade iron in the middle, and the blade iron is used for chopping. The blade iron is in the middle, and the blade iron is sandwiched on both sides of the wrought iron and melted. When burning mud is sprinkled on the knife body, the thinner the knife is, the more mud is used. After the knife is quenched, add the shovel and handle. After quenching, the knife has beautiful texture near the blade. Different from the former, the sword is forged by the hundred steelmaking method, and the pattern of the sword body is folded. The first of these two methods is almost lost. Fortunately, there is a sword-casting villa in the south. The sword-casting master and collectors in Gu Jian used the method mentioned in ancient books to cast the legendary patterned sword. The second steel clamping method I mentioned began in Song Dynasty, and was also adopted by Shancheng, and was introduced to China. The advantage of this kind of knife is that its body is full of rigidity, very tough and not easy to break. In addition, a kind of iron made in Japan is very suitable for making knives, and its reputation is as famous as Damascus steel. Tell you one of the simplest identification methods. Put the knife on the ground, with the blade facing down and the back facing up. It's best not to fall off. This shows that the balance of this knife is very good. But all good knives have this feature.