A feeling of deep nostalgia and longing for a former residence or a glorious past, often implying sadness over its current state of ruin or desolation.
他回到童年玩耍的小院，看着杂草丛生，心中不禁生出故宫离黍之感
Returning to the small courtyard where he played as a child, seeing the wild weeds, he couldn't help but feel a deep sense of longing for the past, akin to 'millet growing in the former palace'.
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