你的世界怎么黑了因为发亮的人走了
[nĭ de shì jiè zĕn me hēi le yīn wéi fā liàng de rén zŏu le]
'Why did your world turn dark? Because the one who lit it up left.' This conveys a profound sense of loss due to the absence of a dear person, implying they were the main source of joy and vitality in life.