白露的“白”指什么（文化中国行·二十四节气二十四问）

Core Points - The article discusses the significance of the "White Dew" solar term, which marks the transition into autumn and is characterized by increasing temperature differences between day and night [3][4]. - "White Dew" is not exclusive to autumn but serves as a cultural symbol, reflecting both natural phenomena and philosophical concepts in traditional Chinese culture [4][5]. Group 1 - "White Dew" begins on September 7, 2025, and is the 15th solar term in the 24 solar terms, indicating the arrival of autumn [2]. - The term "dew" refers to the condensation of water vapor on surfaces during cooler nights, with temperature drops potentially reaching 10 degrees Celsius between day and night [3]. - The character "white" in "White Dew" symbolizes clarity and purity, reflecting the pristine nature of dew drops and their bright appearance in the morning light [3][4]. Group 2 - The cultural significance of "white" is linked to the traditional Chinese philosophy of the Five Elements, where autumn is associated with metal (gold), which is represented by the color white [4]. - The article highlights the connection between the "White Dew" solar term and agricultural practices, symbolizing harvest and abundance as crops mature during this period [4][5]. - "White Dew" is also celebrated in poetry and folk customs, emphasizing its role in guiding seasonal activities and lifestyle adjustments [5].