The cleaver is a large and heavy knife that is used for cutting beef, lamb, pork, fish, poultry and bones. It is meant to be swung like a hammer. The tough edge of the blade can withstand repeated blows directly into thick meat and dense cartilage, while the blade's broad side can be used to crush foods like garlic and ginger.
Clean, dry and impregnate blade with mineral or camellia oil after use. These steps protect the blade from rusting/staining. If rusting/staining does occur, remove with fine steel wool or rust remover. Sharpen the knife with a whetstone or a diamond sharpener.