2. Principle of wormwood foot patch: When the medicine bag is attached to the sole of the foot, it stimulates the relevant reflex zone of the sole, promotes blood circulation, and provides sufficient power for the transporter in subcutaneous tissue. Drugs are absorbed through the skin under the action of transporters, and harmful substances are eliminated through the skin with blood circulation; Harmful free radicals in the body will also combine with ions in the foot patch and be eliminated in the form of diffusion. The combination of the two forms can effectively eliminate toxins in the body and promote human health.