你是毒药亦是解药你是劫数亦是救赎
[nĭ shì dú yào yì shì jiĕ yào nĭ shì jié shù yì shì jiù shú]
The essence of it implies a very complicated romantic attachment where there's duality: a person is toxic yet provides healing, destructive like destiny yet brings deliverance. There is an acknowledgment that one individual contains contradictions within him/herself and impacts the other in profound ways.