Today (September 8th) is the White Dew (Baí Lù), which is the third solar term of autumn. As the poem goes, "Dew turns into frost since tonight; The moon viewed at home is more bright", this is the turning point of weather from hot to cool, which means that the stuffy heat of summer is basically over, and most parts of northern China are transitioning from summer to autumn.

During the White Dew period, cold air frequently affects the north, and most areas are entering autumn.

In terms of temperature, most parts of northern China are gradually becoming autumnal, which is affected by rainfall. The temperature will be relatively low, so people need to pay attention to timely adding or reducing clothing to prevent catching a cold. In the south, the summer heat has not really dissipated, areas that have not been affected by the rainfall still have high temperatures, so people still need to prevent heatstroke.

Nourishing yin and moistening the lungs during White Dew, eating lily bulbs and walnuts are good for health.

In the long years, people in various regions have explored some ways of adapting to the characteristics of the weather and climate during the White Dew period, such as eating pears, cracking walnuts, and drinking "White Dew tea".

During the White Dew period, the dryness of autumn is obvious, eating more lung-nourishing foods is one of the regimen suggested to follow. Pears are revered as the "ancestor of a hundred fruits" and have the functions of nourishing the lungs, stopping coughs, reducing phlegm, and reducing heat. If there are symptoms such as thirst, constipation, and dry cough due to excessively dry weather, eating more pears or lily bulbs can improve.

In folk customs, there is also a tradition of cracking walnuts before and after the White Dew period. Walnuts are rich in amino acids and can help reduce the risk of arteriosclerosis. At this time, most parts of China are cooling down, which is easy to trigger cardiovascular diseases. Walnuts are in the season of turning from green to yellow and maturing, making them a good health food during the White Dew period.

During the White Dew period, people in Nanjing also have the tradition of drinking "White Dew tea". At this time, the tea tree has gone through the hot summer and is in its prime growing period. White Dew tea is not as dry and bitter as summer tea, but has a unique sweet and mellow fragrance.