Functions and indications: Warming the middle warmer, reducing adverse reactions, tonifying kidney and supporting yang. Used for deficiency-cold of spleen and stomach, hiccup and vomiting, anorexia and vomiting, cold pain in the heart, kidney deficiency and impotence. Syringa oblata is the dry bud of Myrtaceae plant Syringa oblata, also known as chicken tongue fragrance and clove. The dried fruit is female clove. Clove has the effects of warming the middle warmer, reducing adverse qi, tonifying kidney and supporting yang. ; Syringa oblata is a commonly used Chinese medicine, and it is one of the traditional imported "southern medicines" in China. It was first published in the Theory of Medicinal Properties. Clove contains volatile oil, which mainly contains clove oleic acid, acetyl clove oleic acid, eugenene, methyl n-pentanone, methyl n-heptanone and vanillin. It has antibacterial and anthelmintic effects and is used as fragrance. Syringa oblata is not only the main medicinal plant, but also a valuable perfume plant in the world. Clove was introduced to China in 1950s, and it was initially successful, and it can blossom and bear fruit normally, but the yield is extremely unstable, and the yield of flower buds per plant varies greatly, sometimes as much as 10 times. Therefore, the high-yield cultivation technology of clove and the asexual propagation technology using excellent mother plants deserve further study.