雷声大雨点小

雷聲大雨點小
léishēngdàyǔdiǎnxiǎo

alternative form of 雷聲大，雨點小 /雷声大，雨点小 (léishēng dà, yǔdiǎn xiǎo, “much said but little done”)

Wiktionary

Entry Composition

1 雷声 léishēng thunder
2 大雨 dàyǔ heavy rain

classifier: 場
3 点 diǎn
  1. to touch briefly; to tap
  2. to mark with a dot; to check off (on a list)
  3. to order (food etc); to select
  4. to mention; to bring up (a topic or person)
  5. to hint at; to imply
  6. to administer (eye medicine etc) in drops
  7. to light (a fire, a lamp etc); to ignite
  8. to nod (one's head) in agreement; to beckon by moving (one's hand) up and down
  9. point; dot; spot; speck
  10. dot stroke in Chinese characters
  11. (math.) decimal point
  12. point in time or space
  13. (after a number) o'clock
  14. a small amount; a bit; (after a verb or adjective) a bit more
  15. classifier for small amounts
4 小 xiǎo
  1. small
  2. tiny
  3. few
  4. young