The custom of inserting Evodia rutaecarpa on the Double Ninth Festival originated in ancient China and became very common in the Tang Dynasty. Evodia rutaecarpa is considered as a good health preserving method, because Cornus officinalis is considered to have the effects of expelling worms, relieving pain, expelling wind, detoxifying and refreshing in traditional Chinese medicine. In addition, Cornus officinalis is also considered to have the functions of exorcism, exorcism, avoiding evil spirits and praying for good luck. Therefore, in some traditional festivals or important occasions, Cornus officinalis is used to pray for peace and good luck.

On the Double Ninth Festival, people's habit of inserting dogwood also means keeping in good health. The fragrance of Cornus officinalis can dispel dampness, dispel cold, warm channels and collaterals, and has health care function. When inserting Evodia rutaecarpa, it is often combined with other health preservation methods, such as climbing, enjoying chrysanthemums and drinking chrysanthemum tea. These activities can enhance the body's immunity, regulate the body's function and improve the body's resistance.

In a word, the custom of inserting Evodia rutaecarpa on the Double Ninth Festival was widely regarded as a good health preserving method in ancient times, which has the functions of exorcising evil spirits, expelling dysentery, praying for blessings and health care. In modern times, people can feel the charm of traditional culture in this way, and at the same time improve their immunity and resistance by climbing mountains, enjoying chrysanthemums and drinking chrysanthemum tea, so as to better protect their health.