猜单双概率公式

简介：Ding Qirui only supervised the two troops of Fang Guoan and Yang Dezheng, plus the 2,000 standard battalion of the headquarters, the total was only 20,000 people. Although the prince sent an engineer battalion to help them dig trenches, the engineer battalion had no combat power. Before fighting face to face and blocking the enemy in the trench, they still need to rely on Fang Guoan and Yang Dezheng.