What are the taboos for throwing old kitchen knives and paying attention to feng shui?

Throwing away the old kitchen knife at home will bring all kinds of bad luck. Because the knife is a killing plant, its original function is to block evil spirits. The magnetic field is too chaotic after drinking. If the knife is still sharp, throwing it away directly will lead to bad luck. Frequent wealth loss. Open feed. Rusty knife. It will also bring bad luck to your family.