Small full - its meaning is that the grains of summer-ripened crops have begun to fill and become full, but they are not yet mature. They are only slightly full, not yet full. Xiaoman is one of the twenty-four solar terms. On May 21st or 22nd every year, when the sun reaches 60° of the yellow path, it is considered a small full day. "Collection of the Seventy-Two Hours of the Moon Order": "In mid-April, when things are small and full, things will be full." At this time, the grains of summer crops such as wheat in northern areas of the country have begun to be full, but they are not yet mature. It is about the late stage of milk ripeness, so it is called Xiaoman. At this time, it is advisable to pay close attention to the prevention and control of wheat field pests to prevent the attacks of dry and hot winds and sudden thunderstorms and strong winds. In the south, it is advisable to pay close attention to the top dressing and tillage of rice to promote the harvesting and harvesting and drying of summer crops on sunny days. After Xiaoman, high temperature weather above 35℃ begins to occur in the south of the Yellow River to the middle and lower reaches of the Yangtze River. Relevant departments and units should pay attention to heatstroke prevention. Be careful to prevent disasters during the "Xiaoman" season.

Xiaoman is the eighth solar term among the twenty-four solar terms. "The nails of a bucket are small and full, and all things that grow there are small and full. When the wheat reaches this level, it is small and full but not yet fully ripe, hence the name." This means that starting from Xiaoman, northern barley, winter wheat and other summer crops have begun to bear fruit, and the grains are gradually becoming fuller, but not yet mature, which is about the late stage of milk ripeness, so it is called Xiaoman. It is a solar term that represents phenological changes. Farmers' proverbs in the southern region give Xiaoman a new meaning: "When Xiaoman is dissatisfied, he will cut his teeth and think about Kan"; "When Xiaoman is dissatisfied, he will ignore the awns." "Man" is used to describe the abundance and lack of rainwater, pointing out that if the field is not full of water when it is full, it may cause the field ridges to dry out, and even rice cannot be planted during the awning season. Because "seedlings are being planted in Xiaoman at the beginning of summer" and "seedlings rush to Xiaoman and the valley rushes to autumn", Xiaoman is the season suitable for rice planting.