你若活得凄凉我定笑的猖狂
[nĭ ruò huó dé qī liáng wŏ dìng xiào de chāng kuáng]
This is quite dramatic. If translated directly, it would mean that if you live a bleak life, I will laugh at it. This can imply feelings of rivalry or deep emotional hurt, possibly harboring spiteful sentiments.