阿姨我是你闺女的对象
[ā yí wŏ shì nĭ guī nǚ de duì xiàng]
In a light-hearted context, it means 'Auntie, I'm the boyfriend/girlfriend your daughter is dating'. Used jokingly as a username, especially while engaging with elders as a way of endearing oneself, introducing in a family-like situation