你过得凄凉我笑得猖狂
[nĭ guò dé qī liáng wŏ xiào dé chāng kuáng]
Your bleak life makes me laugh wildly paints a picture of contrasting emotions or circumstances where the speaker’s amusement is highlighted against the other person's sad reality. It could represent revenge, schadenfreude, or merely starkly different emotional responses.