励兵秣马

Explanation: Phrase "thirty-three years of public Zuo Xi": "Zheng Mu Gong so as passenger hall, the beam load, Li Bing, horse feed horse." That sharpened knives and guns, feed the horses, ready to fight. 　　Source: Phrase "thirty-three years of public Zuo Xi," Zheng Mu Gong so as passenger hall, the beam _set_, Bing Li, Mo Ma. " 　　Examples: Liu and Chen Yan Chen Zuo town, and the enemy is willing to ~ Chi Kok. ★ Ming Chen Long "with the enemy expedient sparse"