和定最值问题口诀简介：Yizhou was the land of the Qing Dynasty. Without Yizhou, Jinzhou would lose its nearest source of grain and grass supplies. Strategically speaking, Jinzhou will no longer be stable.
Yizhou was the land of the Qing Dynasty. Without Yizhou, Jinzhou would lose its nearest source of grain and grass supplies. Strategically speaking, Jinzhou will no longer be stable.
