Guangdong, especially in summer, has hot and humid weather and frequent precipitation. Winter will become dry and humid, that is to say, eating more spicy food can achieve a good cold protection effect, and at the same time, it can prevent diseases caused by cold and humidity. Herbal tea originated in Guangdong, which is the general name of a series of drinks with the functions of clearing away heat and toxic materials, promoting fluid production and quenching thirst, which are developed with Chinese herbal medicines as the main raw materials under the guidance of the local climate, soil and water characteristics and the precious TCM health theory accumulated in long-term disease prevention and health care. As Guangdong has a typical subtropical climate, the summer weather is hot, humid and rainy, and the water quality tends to be dry and hot. Because the hot summer lasts for a long time, and Cantonese people like to eat fried and hot food and stay up late, coupled with improper diet, lack of sleep and other adverse factors, it is easy to cause "hot air" in the human body, which is also commonly known as "getting angry". In order to effectively eliminate damp-heat, clever Cantonese have made various herbal teas with the functions of clearing away heat and relieving summer heat, eliminating dampness and detoxifying, so that they can achieve the dual effects of quenching thirst and health care only by drinking herbal teas.

Relevant studies have proved that herbal tea is cool but not cold, clearing away heat without hurting the spleen and stomach, and is suitable for all seasons, which is exactly in line with modern people's consumption concept. Drinking more herbal tea has a good health care effect on the human body, preventing and treating diseases, and has the effects of eliminating summer heat and dampness in spring and summer and preventing dryness in autumn and winter.