1) tangible objects that are most mentioned in poems and lyrics are probably flowers and the moon. it's universal, now and in past, here and everywhere else.
hence,
春花秋月何時了... 春天的花是多麼的香, 秋天的月是多麼的亮... Some sweet day when blossoms fall, a song of you Comes as sweet & clear as moonlight through the pines