大小单双怎么分析

简介：In order to avoid danger, Dong Chaofu did not choose a shortcut, but made a large circle, first to Dushan Pass and then to Qinglong River. Although the distance was more than doubled, the chance of encountering a large group of Mongolian cavalry should be less. , especially along the way there are the ups and downs of the Dushan Mountains and some small woods, which can provide some cover.