Great Cold 大寒 – Winter Holding the Breath of Spring
Around January 20, when the Sun reaches 300° ecliptic longitude, the Chinese calendar enters a period known as Great Cold (大寒, Dàhán). It is the last of the 24 solar terms — the coldest point of the year and at the same time a quiet threshold of a new beginning. Winter is taking its leave; spring is only just beginning to breathe.
Traditional Chinese medicine teaches that at this time yin is at its peak and yang withdraws. This does not mean stagnation, but transformation. The organs are still in a state of cold, and therefore this is a time to preserve yang, strengthen the body’s foundation, and accumulate energy that will rise in spring like sap in the trees.
The 24 solar terms and tea: the wisdom of nature
The twenty-four solar terms arose from observing the sky, the landscape, and the rhythms of life — much like tea itself. The planting, harvesting, processing, and drinking of tea naturally intertwine with these periods. Each solar term gives tea a distinct character, flavor, and effect. Tea thus becomes not only a beverage, but a guide through the year.
In ancient Chinese culture, the rhythms of nature were closely synchronized with the agricultural cycle. Among the tools used for agricultural planning and development in ancient China, the 24 solar terms (二十四节气) played a central role. Aligned with specific astronomical events and natural phenomena, these terms marked subtle changes in temperature and climate, guiding farmers toward abundant harvests by indicating optimal times for sowing, cultivation, and reaping.
Each solar term is defined by the Earth’s position relative to the Sun and spans 15 degrees along the ecliptic. This division was essential for calculating intercalary months and helped keep the lunisolar calendar aligned with the solar year.
Great Cold from the perspective of traditional Chinese medicine
In traditional Chinese medicine, the Great Cold represents the peak of winter and at the same time a subtle turning point. It is a period when yin energy in both the body and nature is at its strongest, while yang retreats inward. This does not signify a loss of strength, but its preservation. Winter is understood as a time of storage rather than suppression, and the Great Cold marks the moment when this storage is at its most intense.
From the TCM perspective, winter is primarily associated with the kidneys, regarded as the root of innate vitality and the source of both yin and yang for the entire organism. During cold periods, the kidneys are more susceptible to depletion, especially if the body is exposed to prolonged cold, stress, or excessive activity. It is precisely during the Great Cold that kidney yang deficiency may manifest most easily — through sensations of internal cold, fatigue, lower back pain, or reduced resilience. Traditional Chinese medicine therefore emphasizes protection and nourishment rather than stimulation.
The Great Cold is not a suitable time for radical changes, detoxification, or intense physical exertion. Chinese medicine recommends protecting yang rather than consuming it. Excessive activity, heavy sweating, or prolonged exposure to cold may lead to a “leakage” of yang, which often becomes apparent only with the arrival of spring, when the body lacks sufficient energy for a natural upward movement. This is a time to slow down, rest more, keep the body warm, and allow for a regular, calm rhythm.
Digestion also plays an important role. Cold tends to weaken the spleen and stomach — the center of food processing and energy production. During the Great Cold, it is therefore advisable to favor warm, cooked foods and avoid excessive consumption of cold or raw items. At the same time, it is recommended to gradually reduce strongly warming tonics and transition toward a more balanced diet that supports the body without overburdening it. This is not about adding more force, but about creating space in which strength can naturally renew itself.
In this context, tea occupies a special place in Chinese medicine. It is not regarded as a medicine in the narrow Western sense, but as a gentle tool of regulation that helps the body adapt to the season. During the Great Cold, tea can warm the body, promote the flow of energy, calm the mind, and protect yang without exhausting it. This is why teas with a warming and nourishing character are traditionally favored at this time, acting slowly and deeply.
The Great Cold is the final solar term of the year, but in Chinese thought it is not an end. In the deepest depth of winter, movement toward spring is already being born. Those who can slow down, keep warm, rest, and avoid overexertion during this period create the foundation for a natural and smooth return of yang in the months to come. Traditional Chinese medicine thus offers not instructions on how to “survive” winter, but how to cooperate with it — quietly, consciously, and in harmony with time.
From the perspective of traditional Chinese medicine, tea is not a medicine in the Western sense, but a gentle regulatory medium that helps the body adapt to the rhythm of the seasons. During the Great Cold, tea can play an important role: warming and mobilizing energy, supporting digestion, calming the mind, and protecting yang without overstimulation.
For this reason, teas with a warming and nourishing nature are traditionally chosen at this time. Black teas warm the stomach and support the flow of qi, dark teas such as hei cha nourish yang and strengthen the body, while aged white teas gently harmonize and support natural immunity. Flower teas are equally important, acting on emotions and the mind — something just as essential in winter, when energy turns inward, as warming the body.
Tea thus becomes a mediator between the body and time. It does not force change, but quietly prepares it. 🍃
The Great Cold is a final glance back into the depth of winter. The cycle of the year closes. The solar terms fall silent.
Do not fear the cold.
Walk onward with calm and determination.
In spring, hope is always waiting for you.
May you hold on to what keeps you warm,
and step into the next four seasons with an open heart —
and a warm cup in your hand. 🍵