飞艇的计算公式是什么

简介：Different from the main force in the south, small groups of cavalry were sent to the east and west to meet the harassment of the Mongolian soldiers, slowing down the speed, and then shooting with cannons. Although the overall process was not as neat and smooth as the main force of the Beijing camp in the south, in the end They all successfully withstood the harassment of the Mongolian cavalry without being disrupted.