léi​dà​yǔ​xiǎo

much talk little action

  1. thunder
    thunder; the loud noise caused by atmospheric electrical discharge
  2. 大 dà adjective
    big
    big; large; great; vast; high in scale or intensity; (of a person) old; adult
  3. 雨 yǔ noun
    rain
    liquid water in the form of droplets that have condensed from atmospheric water vapor and then become heavy enough to fall under gravity
  4. 小 xiǎo adjective
    small
    small; tiny; few; minor; in area, volume, quantity, or power, being less than average or less than the object of comparison; opposite of 大 dà