養ㄧㄤˇyǎng兵ㄅㄧㄥbīng千ㄑㄧㄢqiān日ㄖˋrì，用ㄩㄥˋyòng兵ㄅㄧㄥbīng一ㄧyī時ㄕˊshí

  1. 長期培訓軍隊，以備一時用兵之需。也作「養軍千日，用在一朝」。

英lit. Train an army for a thousand days to use it for an hour. (idiom)​; fig. extensive preparation eventually pays off