What are the idioms to describe cold weather?

2. Idioms are a major feature of China traditional culture. They have fixed structural forms and expressions, and express certain meanings. They are used as a whole in a sentence, with subjects, objects, attributes and other components. A large part of idioms are passed down from ancient times and represent a story or allusion. Some idioms are just a miniature sentence. Idiom is a ready-made word, similar to idioms and proverbs, but slightly different. Idioms are a bright pearl in China culture.