Monkhood cake is 2 ~ 3cm in diameter and 0.5 ~ 0.8cm in thickness. It is made of powdered aconite mixed with wine. Pierce the cake to make several holes with a needle. Place the cake on the acupoint or diseased area, then place a moxa cone on the cake and light it. When the cone burns out, replace it with another one until completion of treatment. This method is frequently used in case of impotence and prospermia caused by insufficiency of the kidney-yang and chronic ulcerations of sores and ulcers.