数学找规律技巧和方法

简介：Five days later, the main force of 20,000 infantry led by Sun Chuanting and Shi Kefa arrived. In the next few days, artillery from the army also arrived one after another. The roads in the Hetunala area were difficult to travel, and the mountains were high and the forests were dense. It was impossible for the Hongyi artillery to accompany the army. Most of the artillery that reached Hetunara at that time was light artillery.