乔迁 is from 《
诗经·
小雅·
伐木》:
出自幽谷，
迁于乔木 ('emerging from the deep valley, moving to a tall tree') — originally a bird-migration image used as a metaphor for rising in life. Modern use extended it to 'moving house', making
乔迁礼物 literally 'gift for moving up to a taller tree'.
