1. The Yellow Emperor’s Classic of Internal Medicine says: “The positive energy is hidden inside, and the evil cannot enter.” Aromatic herbs are believed to have the effects of strengthening the body, eliminating evil, regulating qi and unblocking the meridians.

2. In his book “Emergency Prescriptions for the Elbow”, Hua Tuo used herbs such as cloves and radix stemonae to make sachets, which were hung indoors or carried with him to prevent and treat respiratory diseases.

3. In his book “Thousand Golden Prescriptions”, Sun Simiao of the Tang Dynasty proposed that sachets can “avoid epidemic air” and “not infect people”, becoming an important tool for preventing and treating epidemics.

4. Since the Song Dynasty, wearing sachets during the Dragon Boat Festival has become a traditional folk custom of repelling insects and avoiding epidemics, and it continues to this day.

5. During the Ming and Qing Dynasties, sachets were not only medical supplies, but also items and emotional tokens. The nobles used silk to make exquisite sachets to hold important food; the common people mostly used cloth bags and embroidered auspicious patterns.

6. The medicinal materials in the sachets are mostly active ingredients, which are absorbed through the respiratory tract or skin to play antibacterial, antiviral, and immune regulation roles.

7. Clothing therapy is a specific manifestation of TCM external treatment. It is to slowly release the medicinal properties by wearing medicine and adjust the aura of the human body’s surrounding environment to achieve the purpose of preventing and curing diseases.