七码阶梯倍投详解

简介：Yuan Jixian, Li Shun, Zong Juntai and others could not think of any countermeasures. Only Yang Xuan gritted his teeth, clasped his fists and said: Your Highness, Jianlu's three heavy cannons are set up five hundred steps away. The artillery on our city wall is no matter what. It can't be bombarded, and if we continue to bombard these three heavy artillery, I think it won't be long before the city wall collapses.