阶梯倍投法

简介：For the first time in his life, Li Shun made a heroic decision. Tongzhou was only seven or eight miles away, and the field cannon weighed less than 300 kilograms, and there were field wheels. Although the river defense was in chaos, the main force of the Jianlu army was still strong. Without crossing the river, Li Shun felt that he could take these small cannons back.