重於泰山 [－于－－]

Jyutping zung6 jyu1 taai3 saan1
Pinyin zhòng yú tài shān

Definitions (CC-CEDICT)
  1. heavier than Mt Tai (idiom); fig. extremely serious matter
Definitions (Wiktionary)
  1. phrase, idiomatic
    more weighty (and important) than Mount Tai
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）