How long should the Sanfu贴 (Sanfu patches) be applied?

Sanfu patches are typically applied during the "Sanfu" period each year, specifically on the first day of Early Sanfu, Middle Sanfu, and Late Sanfu. The Sanfu period is the hottest and most humid time of the year. Applying Sanfu patches during this period takes advantage of the body's abundant yang energy in summer, using medicinal ingredients to stimulate acupuncture points, thereby promoting the effects of warming the body, dispelling cold, and unblocking meridians. The duration of application at each stage varies depending on the medication and individual constitution, and it is generally recommended to undergo treatment under the guidance of a qualified healthcare professional.