单双公式口诀

简介：Historically, the only reason Jizhou fell in the fifteenth year of Chongzhen was because Bai Tengjiao, the commander-in-chief, led his troops to help the Jialingkou. As a result, they encountered a heavy cavalry of Jianqi on the way and were killed. They were defeated and almost the whole army was wiped out. The state became an empty city, so it was captured by Jianlu.