变天 Traditional form: 變天 Pinyin (reading): biàntiān Definitions: to have a change of weather (esp. for the worse) (fig.) to experience a major upheaval; to undergo sweeping change Characters: 变 - to change, to transform, to alter; rebel 天 - sky, heaven; god, celestial Traditional characters: 變 - to change, to transform, to alter; rebel 天 - sky, heaven; god, celestial