Grain buds is the eighth solar term of the 24 solar terms and the second solar term of summer. Every year between May 20 and 22, when the sun reaches longitude 60 degrees, it is called "Minor Full". After the Grain Festival, the weather will gradually become warmer and the rainfall will gradually increase. There is a popular saying, "The Grain Festival is full, and the rivers are full." Small Manchu marks the debut of summer. The grain of summer crops such as wheat is full but not mature, so it is called "Xiaoman".

The main purpose of health preservation is to enhance the body's vital energy and prevent the invasion of diseases. Since the Little Full Term is a high incidence period of skin diseases, according to the health concept of "curing and avoiding diseases", the focus is on prevention and treatment. For skin patients with rubella, it is advisable to take a light vegetarian diet, including food with the role of clearing moisture and heat. During the "Grain Full" season, everything flourishes and the human body's physiological activities are in the most vigorous period. The consumption of nutrients is also the largest, and nutrition can be properly supplemented.