单包双包是什么意思

简介：But as a side general, Li Dingguo could not attack without permission without the permission and support of Yang Huifang, the governor of Miyun. Therefore, Li Dingguo came to see Yang Huifang, explained in detail, and took the initiative to ask for a fight. However, Yang Huifang thought that his plan was too risky, and if it went wrong, Li Dingguo thought that his plan was too risky. , the entire army will be annihilated and die on the grassland, so I disagree.