Wear dogwood chrysanthemum on Double Ninth Festival.

Double Ninth Festival has the custom of paying attention to cornucopia, so it is also called "cornucopia Festival". Cornus officinalis is an important symbol of the Double Ninth Festival. People also like to wear chrysanthemums on the Double Ninth Festival. Cornus officinalis is also called "evil spirits", and chrysanthemum is also called "longevity guest". Cornus officinalis is a kind of fruit that can be used as Chinese medicine. Because the quality of cornus officinalis produced by Wudi is the best, it is also called Evodia rutaecarpa, also known as Vietnamese pepper or mugwort leaf. It is a small evergreen tree that can grow to almost a foot high. Its leaves are compound leaves, with green and white flowers in early summer, as strong as pepper seeds. Autumn matures. The fruit is yellow when tender and turns purple when ripe. Has the effects of warming middle warmer, relieving pain and regulating qi. The leaves of Cornus officinalis can cure cholera, and the roots can kill insects. It is said that it smells spicy and fragrant, is warm in nature, and can cure cold and drive away poison. The ancients believed that wearing dogwood could ward off evil spirits and eliminate disasters.

The custom of wearing dogwood on the Double Ninth Festival was very popular in the Tang Dynasty, and people thought that inserting Evodia rutaecarpa on the Double Ninth Festival could take refuge and eliminate disasters. Or wear it on your arm or make it into a sachet. Put the dogwood in and put it on. Cornus has bags under his eyes and something in his head. Most of them are worn by women and children, and some places are also worn by men. Cornus officinalis is associated with the Double Ninth Festival, which is recorded in Ge Hong's Compendium of Materia Medica in Jin Dynasty. Besides wearing dogwood, people also wear chrysanthemums. This kind of thing happened in the Tang Dynasty and has been popular since ancient times. The custom of Beijing Double Ninth Festival in Qing Dynasty was to stick chrysanthemum branches and leaves on doors and windows to ward off evil spirits and attract wealth. This is the vulgarization of the chrysanthemum on the head. In the Song Dynasty, ribbons were also cut into dogwood and chrysanthemum to wear as gifts.

In fact, Cornus officinalis has the same function as realgar and calamus in Dragon Boat Festival, aiming at killing insects and moths. Because after the Double Ninth Festival, it is October, and the weather has warmed up for some time; Some time before the Double Ninth Festival, the autumn rain was wet, the autumn heat had not subsided, and clothes were prone to mildew. This time is the time when osmanthus is in full bloom, so the folks call it "osmanthus steaming". At this time, we must prevent insects from eating. Cornus officinalis has low toxicity and insecticidal effect. This is how the custom of making dogwood capsules came about.

However, after the Song and Yuan Dynasties, the custom of wearing dogwood became scarce. The reason for the change is probably the shift of the center of gravity of the Double Ninth Festival. The focus of Chongyang people's early life is to avoid evil and eliminate disasters. With the improvement of people's living conditions, people not only pay attention to the current real life, but also give more expectations to the future life and pray for a long life. Therefore, the status of "longevity guest" has finally overshadowed the "evil urn".