如果再也见不到你了
[rú guŏ zài yĕ jiàn bù dào nĭ le]
This username means 'If I never see you again,' expressing the feeling of parting, which often has a sense of helplessness and pain. It implies that after parting from some important person in life, one might not have another chance to meet again, filled with sadness and regret for those unforgettable memories.