天空

天空 refers to the space above the earth, typically visible when looking up, and is often associated with the atmosphere and celestial objects like the sun, moon, and stars.

The character 天 (tiān) originally meant 'heaven' or 'sky' and is related to the concept of the upper realm. 空 (kōng) means 'empty' or 'space,' so together they form a term that literally translates to 'empty sky' or 'open space above.'

天空 is commonly used in everyday speech to describe the sky's appearance, such as during different weather conditions or times of day. It also appears in poetry and literature to evoke feelings of vastness, freedom, or serenity. In Chinese culture, the sky often symbolizes the heavens or divine forces.