Yes.

Both official hat walnuts and lion head walnuts are play walnuts and can be played together, but hand playing is time-consuming, laborious, and requires patience. When playing handball, you need to rub the sweat and oil in your hands into the inner skin of the walnuts. The water in the walnuts will evaporate and gradually replace it with its own body fluids. Finally, it will reach a basically saturated state. It will be absorbed and penetrated repeatedly until it becomes shiny.