on the chopping board knife problem. Most of the high-quality tools used today are made of high-quality stainless steel. The hardness is high and the toughness is not easy to fold. The hardness of the harder bamboo is only 32 HB, which is far lower than the hardness of the knife. To say that the wounded knife is impossible, unless With a slicing knife, it is possible to cut the bones and metal before they are cut.