In the tradition of Jiangnan people, they eat "wuhuang" during the Dragon Boat Festival-Monopterus albus, yellow croaker, cucumber, salted egg yolk and realgar wine (realgar is toxic, and ordinary yellow wine is generally used instead of realgar wine).

At noon on the Dragon Boat Festival, the most suitable meal for wuhuang is to mix five kinds of yellow food. Because the theory of traditional Chinese medicine holds that the Dragon Boat Festival is on the fifth day of the fifth month of the lunar calendar, which is the peak of yang in a year, and at noon, which is the peak of yang in a day, we can use the power of the solar terms of the Dragon Boat Festival to curb bad luck and enhance our energy.