[养兵千日,用兵一时 / 養兵千日,用兵一時, yǎng bīng qiān rì, yòng bīng yī shí, ㄧㄤˇ ㄅㄧㄥ ㄑㄧㄢ ㄖˋ, ㄩㄥˋ ㄅㄧㄥ ㄧ ㄕˊ]lit. Train an army for a thousand days to use it for an hour. (成语 saw); fig. extensive preparation eventually pays off[Add to Longdo]
[养兵千日,用在一朝 / 養兵千日,用在一朝, yǎng bīng qiān rì, yòng zài yī cháo, ㄧㄤˇ ㄅㄧㄥ ㄑㄧㄢ ㄖˋ, ㄩㄥˋ ㄗㄞˋ ㄧ ㄔㄠˊ]lit. Train an army for a thousand days to use it for one morning. (成语 saw); fig. extensive preparation eventually pays off[Add to Longdo]