[Flavor of the solar term in China] With the solitary and elegant fragrance of wintersweet, Xiaohan Solar term came to the appointment on time amid the sound of the flying geese returning from the north. Xiaohan is the solar term indicating the change of temperature. It is recorded in the Collection of Seventy two Climatic Signs of the Moon that "a slight cold is the December Festival. The cold at the beginning of the month is still small, so it is cloudy. The half of the month is big." The cold air has been cold for a long time. A slight cold means that the weather is cold, but it has not reached the extreme, marking the official beginning of the winter season. After the winter solstice, the cold air frequently moves southward, and the temperature continues to decrease. The temperature drops to the lowest during the mild cold and severe cold of the year. From the folk saying "mild cold occurs in 29, and the weather is cold to shiver", you can feel the cold of mild cold. "Small cold is better than big cold, which is not uncommon." Although it is called "small cold", in northern China, the small cold solar term is usually colder than the big cold solar term. For most areas in the south, the cold solar term is even colder. At this time, most areas in the north are in the winter break period of agriculture. People need to make vegetable cellars, livestock houses to keep warm, and make fertilizer at home. In the south, winter fertilizer should be applied to wheat, rape and other crops to prevent cold and freezing. Experienced farmers can speculate on the climate of the coming year based on the mild cold climate. There are folk sayings such as "mild cold, stinging insects" and "mild cold, but not cold, the mud of the Qingming Festival". In winter, everything is silent and hidden, but in the silence, there is also the vitality and sprouting of Xiangyang. "Birds get Qi first". The subtle changes in seasonal circulation are keenly perceived by birds. The ancients divided Xiaohan into three periods: "the first period is Yanbei Township; the second period is Que's nest; the third period is Pheasant's nest." During the period of Xiaohan, the yang qi has moved, and the wild geese begin to migrate to the north. The magpie in the north sensed the yang qi and began to build a nest for the coming year. Pheasants also begin to sing in unison because they sense the growth of yang qi. Yuan Zhen, a poet of the Tang Dynasty, wrote in the poem Chanting Twenty four Qi · Xiao Han's December Festival: "Xiao Han connects with Da Lu, and the magpies build new nests." At this time, you should listen to the chirping birds in the forest and the sound of wings flapping on the branches, and feel the power of life in the cold winter. Frost and snow will melt, and spring will come after the severe cold. When the wind comes, flowers have letters. In the 24 flowers trade, Xiaohan "waits for plum blossom, camellia and narcissus". The awe inspiring plum blossom, the gorgeous camellia and the elegant narcissus add a few wisps of fragrance to the vast land in the small cold season, and also bring spiritual comfort to countless people struggling in winter. "When I heard the plum blossom and the morning wind, the snow was all over the four mountains." In the small cold season, the world was bleak and the cold was biting, but the plum blossom was still blooming in the wind and snow. At this time, the wintersweet has already opened, and the red plum is waiting to be released. You should take three or five friends to step on the snow to explore the plum blossom. Plum blossom ranks first among the 24 flower letters and has been widely chanted by scholars since ancient times. In "You Qian Shan", Lu You wrote: "The sound of clogs startles the pheasants, and the wind signals the plum blossom." The sound of the poet's wooden clogs startles the pheasants in the mountain forest. The rustling Huaxinfeng sent the news that plum blossoms were blooming in the mountains. In his poem Early Plum, Liu Zongyuan wrote the expression and fragrance of the early plum blossom in cold weather with the poem "The early plum blossom sends tall trees, reflecting the blue sky of Chu. The new moon blows the fragrance of the night, and the thick frost moistens the dawn white". Since the beginning of the plum blossom, each bloom in life will come in turn. During the long and long years of life, people adopt the way of eating and drinking according to local conditions