The traditional Chinese solar calendar divides the year into 24 solar terms. Frost's Descent, (Chinese: 霜降), the 18th solar term of the year, begins this year on Oct 23 and ends on Nov 6.

Frost's Descent is the last solar term of autumn, during which time the weather becomes much colder than before and frost begins to appear.

Here are eight things you should know about Frost's Descent.

Frosty autumn

Frost consists of white ice crystals of frozen water vapor near the ground. During Frost's Descent, frost begins to appear. But in the lower reaches of the Yellow River region, frost first appears in late October or early November. As Frost's Descent comes, the world is filled with the atmosphere of late autumn.