Recorded in 《
三国演义》 (Romance of the Three Kingdoms), chapter 34 — Liu Bei's strategist counsels: '
且待半年,
养精蓄锐,
刘表,
孙权可一鼓而下也' ('Wait half a year, conserve our strength, and Liu Biao and Sun Quan can be taken in one stroke').
养 'nurture' the
精 'spirit/vitality',
蓄 'store up' the
锐 'sharpness/edge'.