Sending coolness on a hot summer day, and caring for it is refreshing.

"send coolness in hot summer, and care is refreshing" means: send coolness in hot summer, which not only brings coolness to the body, but also brings care and concern to the mind, making people feel warm and comfortable. This sentence is usually used to describe that in the hot summer, people care about each other and pay attention to each other's feelings, and send coolness and care to each other in various ways, which makes people feel the warmth and mutual assistance of society.