bì​hǎi​qīng​tiān

loneliness

碧海青天 bì​hǎi​qīng​tiān
loneliness
the profound solitude or lifelong remorse of a person (originally referring to Chang'e or a faithful widow) facing the vast universe alone
sea and sky
the green sea and the blue sky, describing a scene where the sea and sky appear to merge into one shade

Frequency

Written text
0.061 per million

Sources

Definitions
CC-CEDICT
Frequency data
BCC Corpus (BLCU)