养兵千日，用兵一时 (養兵千日，用兵一時) yǎngbīng qiān rì, yòng bīng yīshí

yǎngbīng qiān rì, yòng bīng yīshí phrase Train an army for a thousand days to use it for an hour.; extensive preparation eventually pays off
Domain: Proverb 谚语
Notes: (CC-CEDICT '養兵千日，用兵一時')