About the time of the dragon boat festival, the weather turns hot, and children in particular become victims to the diseases of summer.
當時的醫藥衛生不發達，一遇暑熱，毒蟲、細菌繁殖快速，容易傳染疾病。端午節時暑氣更盛，民間有「吃了端午粽，方把寒衣送」之說，因此過端午時總要吃些、掛些特殊的東西，以防暑熱和蟲菌侵害。