(1) around October 23rd of the solar calendar each year, when the sun reaches 210 degrees of the yellow longitude for the twenty-four seasons in the frost. Frost is the last festival of autumn, is the transition from autumn to winter. Autumn evening on the ground heat dissipation a lot, the temperature suddenly dropped to below 0 degrees, water vapor in the air on the ground or plants directly condensed to form fine ice needles, some become hexagonal frost flowers, white and loose structure.

(2) "Frost" indicates that the weather is gradually becoming cold, dew condensation into frost, China's ancient frost is divided into three waiting, one waiting for the jackal is a sacrificial beast, the second waiting for the yellow fall of grass and trees, the third waiting for the stinging insects salty pitch. Jackals began to capture prey, to the beast and sacrificed to the sky to report this also, the square store and sacrificed to the meaning of autumn gold, the leaves on the ground withered and yellowed fall, stinging insects are all in the hole does not move do not eat, hanging down his head into hibernation state. : 2, frosty folk customs: in some parts of China, frosty season to eat red persimmons, in the view of the local people, so that not only can be cold and warm, but also fill the sinews and bones, is a very good frosty food. Quanzhou old man for frost eating persimmons is: frost eating ding persimmons, will not runny nose. In some places, the explanation for this custom is: you have to eat persimmons on the day of frost, otherwise your lips will be cracked for the whole winter. People living in the countryside at this time, will climb a tall persimmon tree, pick a few bright and sweet persimmons to eat.