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Jyutping on3 tou4
Pinyin àn tú

Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)
Examples (Wiktionary)
  1. Mandarin
    按图索骥
    按圖索驥
    àn tú suǒ jì
    • literally, "to seek a fine horse by checking against a drawing"