你们的幸福像刀刺穿我的心
[nĭ men de xìng fú xiàng dāo cì chuān wŏ de xīn]
Your happiness stabs me like a knife in the heart: The person who uses this name may be implying they are hurt because of someone else’s joy. It could relate to unreciprocated feelings of affection, envy over success etc.