Evergreen is a traditional flower in China, which focuses on viewing leaves and enjoying fruits. It has always been regarded as a symbol of good luck and longevity, and is often used as an eye-catching trademark on the packaging of health food or longevity drugs.

Evergreen is a perennial herb of Liliaceae, which is native to China and Japan, and also known as grass that never withers in winter, iron pole, snake sword, etc. The rhizome is short and fleshy, and the plant height is about 50 ~ 60 cm. The leaves are clustered on the rhizome, broad-banded, leathery and full of waves. Floral axis is drawn from the foliage, with a height of10 ~ 20 cm. The spike is terminal and blooms at the turn of spring and summer. It is light green and white at first, and then turns yellow or orange due to different varieties. Form a spherical berry, and the red fruits and green leaves set each other off. Because it is evergreen and never dies, it is called evergreen and never dies in winter.

The main cultivated varieties of Evergreen are Phnom Penh Evergreen with yellow leaves, Evergreen with white leaves and Evergreen with white leaves, which are often used as decorative display products in rooms, living rooms and conference platforms.

Evergreen is called "White River Car" in Chinese medicine, which is cold in nature and bitter in taste. It has the functions of clearing heat and stopping bleeding, reducing swelling and detoxifying, and strengthening the heart and diuresis. It can relieve arsenic or opium poisoning. The roots and leaves of Evergreen are commonly used as herbs in the folk, which are taken orally to treat traumatic injury and sore throat. External application is used to treat snake bite and mastitis.