Clover is a herb known as "spearmint". Also known as: green mint, fragrant cauliflower, fragrant mint, green mint, blood coriander, dog meat incense, earth mint and so on. Legend has it that the Yellow Emperor and Chiyu war, Chiyu good witchcraft, against the array of often miasmatic poison to kill people, and can be immortal, brave and incomparable. Yellow Emperor is not capable of enemy, please God to help it break. The Goddess of Heaven granted the Yellow Emperor a kind of Hokkien grass, i.e. ten fragrant vegetables. So that the subjects planted, used to strengthen the body, to avoid filth and drive away evil spirits, and no longer fear Chiyu miasma poison; and granted the Yellow Emperor the art of recluse to the enemy Chiyu, so that the flag off the victory, captured and killed Chiyu.

Mint, Latin name (Mentha haplocalyx Briq.) soil name "silver Dan grass", for the Labiatae, that is, other dry grass of the same genus. Born in the mountains and wetlands beside the river, rhizome horizontal underground, mostly born at 2100 meters above sea level, but can also be grown at 3500 meters above sea level, is a kind of special economic value of the aromatic crops. The whole plant is green and fragrant. Leaves opposite, small lavender flowers, lip-shaped, dark purple-brown fruit after flowering.

Mint is one of the commonly used Chinese medicines. It is a pungent and cool sweating and antipyretic medicine for influenza, headache, redness of the eyes, body heat, swelling and pain in the throat and the bed of the teeth. Externally, it can be used to treat neuralgia, itchy skin, rashes and eczema. Normally, mint is used as a substitute tea to clear the mind and eyes. In China, mint is mainly produced in Jiangsu and Anhui provinces. Peppermint planting methods are rhizome planting, planting and cuttings propagation of three.