上下一心 shàngxiàyīxīn of one heart and mind Definitions Defs Origin Strokes Stroke Words Sentences Sents 上下 shàngxià superiors and subordinates superiors and subordinates; the high and the low; seniors and juniors; all members of a group or organization一心 yīxīn verb of one mind of one mind; unified in purpose; to act as one