倍投层进模式

简介：Amidst the sound of war drums and the waving of the military flag, five hundred young men selected from the common people were responsible for pushing the shield chariot and carrying the ladder, followed by five hundred elite soldiers, five hundred Guanning soldiers, and four hundred engineers, followed closely behind, and their first The first goal is to conduct a tentative siege of the city, and the second goal is to cover the engineering battalion's excavation under the wall.