Bailu (White Dew) is one of the 24 traditional solar terms in the Chinese lunar calendar, typically occurring between September 7th each year. This solar term signifies the gradual cooling of the weather, with the arrival of more pronounced autumnal conditions. The name "Bailu" translates to "white dew," referring to the dew that forms on plants and surfaces during this period due to the drop in nighttime temperatures. The dew appears white, hence the term "White Dew."
During Bailu, the temperature difference between day and night increases. Mornings and evenings are cool, while midday remains relatively warm. This period also marks the start of the autumn harvest, as crops begin to ripen. In traditional Chinese culture, Bailu is a time to appreciate the changing autumn scenery, and many poets have written about the beauty of the season.
There are also various customs associated with Bailu. For example, in some regions, people drink Bailu tea or enjoy Bailu rice wine. In southern China, there's a saying, "Bailu body should not be exposed," emphasizing the need to dress warmly as the nights become cooler to avoid catching a cold.
