阶梯倍投最科学的方法

简介：Prince Zhu Cihong stood by the wall, holding up his telescope, nervously watching the battle of the three hundred warriors. From the time they left the city to the last four small bronze cannons, they fired continuously, blasting all three of Jianlu's heavy cannons into scrap metal. He watched the whole process, and while he was moved by the bravery of Yang Xuan and others, he was even more worried about their retreat.