如何计算到期天数的公式

简介：But in a tight siege, how easy is it to get out? Wu Sangui and the others fought to the west, blocked them from the west, blocked them from the south, blocked them from the south, the sound of horns and shouts of killing continued, and the volleys of bows, arrows, birds and muskets were as dense as a torrential rain. In addition, there were trenches and gullies dug in advance. Under the continuous blockade and impact, Guan Ning's cavalry collapsed uncontrollably.