On January 20, 2024, China entered ‘Dahan’ (Great Cold), the final solar term of the traditional 24 Solar Terms, marking the coldest period of the year. On this day, temperatures across Heilongjiang Province plummeted, with some areas recording a low of -36°C—the lowest since the onset of winter. As China’s northernmost province, Heilongjiang experiences long, harsh winters, and the Dahan period often coincides with frequent cold air outbreaks and strong radiative cooling at night, driving temperatures to extreme lows.Meteorologists note that such frigid conditions pose significant challenges to daily life, transportation, and agriculture. Outdoor workers must guard against frostbite and equipment malfunctions, while heating systems face heightened demand. However, the extreme cold also creates iconic winter scenery—such as the famous Harbin Ice and Snow World—drawing numerous tourists seeking unique icy experiences.Interestingly, despite being the coldest solar term, an old Chinese farming proverb says, ‘When Dahan reaches its peak, warmer days follow.’ This reflects the traditional belief that after the deepest cold, yang energy begins to rise, signaling the gradual return of spring. While staying warm remains essential, people can also look forward to the coming thaw.
2024年1月20日，中国二十四节气中的‘大寒’正式开启，标志着一年中最寒冷的时期到来。当日，黑龙江省多地气温骤降，其中部分地区最低气温跌至-36℃，创入冬以来新低。作为中国最北端的省份，黑龙江冬季漫长严寒，而‘大寒’节气恰逢冷空气活动频繁期，叠加辐射冷却效应，使得夜间气温极易降至极低水平。气象专家指出，-36℃的低温对居民生活、交通出行和农业生产均带来严峻挑战。户外作业需严格防范冻伤与设备故障，同时供暖系统负荷显著增加。不过，如此低温也带来了独特的‘冰城’景观，如哈尔滨冰雪大世界等冬季旅游项目吸引大量游客。值得注意的是，尽管‘大寒’是一年中最冷的节气，但传统农谚有云：‘大寒到顶点，日后天渐暖’，意味着此后阳气开始回升，春天的脚步已悄然临近。公众在防寒保暖的同时，也可期待寒冬之后的温暖回归。
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