一动不动
yī​dòng​bù​dòng HSK7

motionless

  1. 一 yī adverbnumeral
    [suddenness]
    Used before a verb to indicate that an action or situation occurs suddenly or unexpectedly.
  2. 动 動 dòng verb
    to move
    To change position or status; to set something in motion or displace it; to touch; to alter or modify.
  3. 不 bù adverb
    not
    Negative adverb used before verbs, adjectives, and other adverbs to indicate negation; also used as a bound-form prefix to form terms with opposite meanings
  4. 动 動 dòng verb
    to move
    To change position or status; to set something in motion or displace it; to touch; to alter or modify.