ancient chinese believed the day of duanwu was unlucky because midsummer was just around the corner. the hot weather used to bring various diseases, which could spread rampantly. dispelling disease and driving out evil were the main purpose of the festival. people would paste on their front doors pictures of zhongkui, a legendary chinese ghost-catcher. people would also use cattail and mugwort leaves to drive away mosquitoes and other insects.
since children are generally the most vulnerable to disease, they received extra care at this special time. children would wear necklaces or bracelets, made of red, yellow, blue, white and black threads, to keep evil away from them. they would also receive colorful pouches containing fragrant herbal medicines as presents. they hung these around their necks, and would compete with one another to see whose pouch had the finest needlework. mothers also made sure to bathe their children in water boiled with herbal medicines. modern science has proven that these medicines are, in fact, quite beneficial to health.
ancient chinese believed realgar was an antidote for all poisons, and therefore most effective to drive away evil spirits and kill insects. so everyone would drink some realgar wine during the duanwu festival, and children would have the chinese character for “king” written on their foreheads with realgar wine.