What are some idioms that describe coolness?

Tiān gāo qì shuǎng Translation: In autumn, the sky is high and clear, and the climate is cool and pleasant. As an attributive and clause; to describe autumn.

Qing Qing Shuang qīng qīng shuǎng shuǎng? Translation: means neat and clean or fresh and cool. As attributive and adverbial; used in spoken language.

Golden wind brings refreshment jīn fēng sòng shuǎng Translation?: Gold wind: refers to the autumn wind. In ancient times, the seasons were explained by the yin and yang and the five elements, with autumn as gold. The autumn wind brings coolness. As a predicate and attributive; it refers to the coolness brought by the autumn wind.

Autumn is high and solemn qiū gāo qì sù Translation?: Describes the clear sky in autumn and the cool and pleasant climate. As a predicate and attributive; referring to the autumn weather.

Warm winter and summer 凊dōng nuǎn xià qìng translation: cool. Keep warm in winter and cool in summer. Metaphors are used when appropriate.