Xiaohan is the penultimate solar term in winter. Its arrival means the end of the year. Xiaohan is usually celebrated between January 5 and 7. According to the Collection of Seventy Two Marquises of the Moon Order, it is named "Xiaohan, the December Festival. The cold at the beginning of the month is still small, so it is cloudy. Half of the month is big." In the eyes of the ancients, cold is a process of continuous accumulation. Cold air has been accumulated for a long time, but it has not reached its extreme point, so it is called "Xiaohan". After the winter solstice, the cold air frequently moves southward, and the temperature in various places continues to drop. The small cold is near the "March 9". The folk saying goes, "Once the small cold passes, go out on the ice" and "the small cold is better than the big cold". This shows the cold degree at this time. In the light cold season, most areas in the north are in winter, while most areas in the south are engaged in fruit tree pruning, winter fertilizer application of wheat and rape, and winter vegetable warmth preservation. Farming is not busy. However, farmers have long been concerned about the annual harvest. People often predict the weather and farming in the coming year according to the temperature and rainfall changes of Xiaohan. For example, "it is warm when it is slightly cold, but it snows in spring" and "it is not cold when it is slightly cold, but it is muddy during the Qingming Festival". It is warm when it is slightly cold that year, which indicates that there will be snow around the beginning of spring in the next year, and there will be more rain during the Qingming Festival; "It is drizzly in the light cold, and the rain wakes the insects and freezes them to death." If it is drizzly in the light cold, the cold will last until the next year when the rain wakes the insects; In addition, there are "mild cold without rain, mild summer will be dry", "mild cold is not cold and severe cold", etc. In the cold winter months, people pay attention to food and health care, and have formed distinctive Xiaohan food customs. For example, Xiaohan, a native of Nanjing, wants to eat vegetable rice. He takes the Nanjing characteristic "dwarf yellow" green vegetables, bacon slices, sausage slices, and diced salted duck, and then chops ginger and cooks them together with glutinous rice. It tastes delicious. Guangzhou people like to eat glutinous rice in the morning. The glutinous rice is not only glutinous rice, but also has to be served with fried Guangzhou cured meat (sausage, bacon), peanuts, chopped scallions, etc. In Jiangsu and Zhejiang, it is a custom for Xiaohan to eat peanuts. Peanuts can keep fit. The local proverb says that "Xiaohan celebrates the fruit" and "Xiaohan eats peanuts in the coming year". From the perspective of traditional Chinese medicine, after the consumption of spring, summer and autumn, the human body's qi and blood are weak. The "March 9th" is the most cold, with a lot of yin and evil qi. At this time, reasonable supplements can resist the attack of cold, making the body strong in the coming year. Small cold food supplements pay more attention to "warmth", that is, some warm and hot foods are used to benefit the body, such as mutton, chicken and other meat, walnuts, dates, longan meat and other vegetables and fruits. It is the so-called "three nine to make up for one winter, and there will be no pain in the coming year". In the cold, there are still flowers and letters coming as promised. Zhu Shuzhen, the poetess of the Song Dynasty, said, "The shadow of the sunflower will grow until the sun, and the plum blossom will blossom first in the light of the cold.". Plum blossoms, with their unique fragrance, add some color to the desolate and cold world. Plum blossoms have been blooming since the beginning of the cold season, and more and more people are searching for plum blossoms. Mei, together with pine and bamboo, is known as the "Three Friends in Winter", and has been praised by the world for its lofty and noble attitude. In Lu You's "Youqian Mountain", there is a saying that "the sound of clogs startles the pheasants, and the wind signals the plum blossom". "Fengxin" means "trade wind", which is the wind blowing in response to the flowering season. A gust of wind blew out the seasonal flowers. The ancients selected the most accurate flower as the representative of this festival, which is called "Huaxinfeng". Xie Zhaoqi of the Ming Dynasty wrote in "Five Miscellaneous Zu": "Those who believe in the wind 24 times a day, from the cold to the rain in the valley, in April, they wait 24 times for eight climates, every five days, with one flower