idiom · a sudden turn for the better or a new way out appearing when one is in a desperate or difficult situation

经过长时间的艰苦摸索，实验终于柳暗花明，取得了重大突破。

idiom · the literal image of willow trees providing shade and flowers bringing brightness, describing beautiful and dense spring scenery

漫步在公园里，柳暗花明，处处充满了春天的气息。