天空 tiānkōng HSK3 sky Origin Definitions Defs Strokes Stroke Words Sentences Sents 海阔天空 hǎikuòtiānkōng boundless as wide as the sea and sky; used to describe a broad, open landscape or limitless vistas乳白天空 rǔbáitiānkōng whiteout weather condition where visibility and contrast are severely reduced by snow or clouds