如何计算和值最精准的公式

简介：The Ming army has dug trenches in the north and east of Jinzhou City, cutting off the roads to the north and east of the city. The surrounding mountains have also sent troops to defend, forming fortifications and walled cities. Even after nightfall, there are blazing torches around Jinzhou. There were crowds of people, and it seemed that the Ming army was building fortifications day and night.