'Chéng liáng' literally means 'to ride coolness' — a poetic, idiomatic expression describing the act of seeking relief from summer heat by sitting or staying in a shaded, breezy place, such as under a tree, on a porch, or near a fan. The character 乘 (chéng) here functions as a verb meaning 'to take advantage of' or 'to enjoy', while 凉 (liáng) means 'coolness' or 'cool air'. Together, they evoke the pleasant, relaxed experience of cooling off intentionally and leisurely.

This phrase is commonly used during hot weather, especially in summer, and often implies a slow, unhurried, communal activity — like elders chatting under a banyan tree or families gathering in the evening breeze. It carries connotations of comfort, rest, and simple enjoyment of nature’s refreshment. Unlike generic terms for 'cooling down', chéng liáng emphasizes location (shade), intention (seeking relief), and atmosphere (calm, social, seasonal).