单双倍投公式图

简介：Because all the elite Ming troops were lost in the Battle of Songjin, Jianlu chose to march from Jizhou, which was not very suitable. In the second year of Chongzhen, the reason why Jianlu Huang Taiji marched from Jizhou was because the Mongols had not yet surrendered. For them, if they go around Gubeikou without the Ming army taking action, the Mongols will not let them go.