有恨才有爱
[yŏu hèn cái yŏu ài]
'There Can Only Be Love When There is Hate' expresses that love and hate are opposite yet coexisting sentiments, and sometimes intense love may also come from a deep and strong experience of emotion, such as being hurt. In another view, it conveys that through confrontation with hatred, we can have a deeper understanding and more sincere affection for the people or things we value.