分开才知道爱分手才懂得你
[fēn kāi cái zhī dào ài fēn shŏu cái dŏng dé nĭ]
Only After Separating Did I Know Love; Only After Breaking Up Did I Understand You: Reflects realization and regret following breakups—acknowledgment of love only once parted or appreciating someone deeply only upon losing them.