快馬加鞭 [－马－－]

Jyutping faai3 maa5 gaa1 bin1
Pinyin kuài mǎ jiā biān

Definitions (CC-CEDICT)
  1. to spur the horse to full speed (idiom)
  2. to go as fast as possible
Definitions (粵典–words.hk)
  1. 語句
    快​上​加快​，​加速​前進
    to get faster; to advance more quickly; literally: fast horse plus
Definitions (Wiktionary)
  1. phrase, idiomatic, of a fast person or thing
    to go even faster
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）