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Jyutping jat1 bou6 dang1 tin1
Pinyin yī bù dēng tiān

Definitions (CC-CEDICT)
  1. reaching heaven in a single bound (idiom); (esp. with negative: don't expect) instant success
Definitions (粵典–words.hk)
  1. 語句
    做事​過於急​進
    describe people who want to attain the highest level in one step
    • 慢慢嚟,做嘢唔可能一步登天嘅。
      慢慢嚟,做嘢唔可能一步登天嘅。
      maan6 maan5 lei4, zou6 je5 m4 ho2 nang4 jat1 bou6 dang1 tin1 ge3.
      Relax, nothing can be done in one step.
Definitions (Wiktionary)
  1. phrase, idiomatic
    to advance to a high position easily; to achieve instant success
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)
Examples (粵典–words.hk)
  1. Cantonese
    你连基本功都未打好就想一步登天?
    你連基本功都未打好就想一步登天?
    nei5 lin4 gei1 bun2 gung1 dou1 mei6 daa2 hou2 zau6 soeng2 jat1 bou6 dang1 tin1?
    • Are you trying to reach the sky in a single bound? You can't even do the basics well.
  2. Cantonese
    慢慢嚟,做嘢唔可能一步登天嘅。
    慢慢嚟,做嘢唔可能一步登天嘅。
    maan6 maan5 lei4, zou6 je5 m4 ho2 nang4 jat1 bou6 dang1 tin1 ge3.
    • Relax, nothing can be done in one step.