During the Dragon Boat Festival, Chinese put mugwort leaves and calamus on the doors. [Photo/IC]

Hanging auspicious leaves

The fifth lunar month is marked as a "poisonous" month in the Chinese farmer's calendar. This is because insects and pests are active during this summer month and people are more prone to catch infectious diseases.

During the Dragon Boat Festival, Chinese put mugwort leaves and calamus on the doors or windows to repel insects, flies, fleas and moths from the house. Those leaves have curative properties and can prevent an epidemic.