No, in the plot of "Man Jiang Hong", there are many kinds of knives for Lord He, and the cunning blade is one of them. The red one is not taken back, but shot and killed. Cheng He's knife is only used to cut vegetables, and can be used to cut branches and so on. There is not only one kind of knife for adults, and not every kind can kill people by pressing it. For example, a kind of "kitchen knife" can only cut on very thin materials and cannot be used to kill people.